Home / 20,116.08-30,355.02-19,421.10

Finding the Fourth Proportional to 20,116.08, 30,355.02 and 19,421.10

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Solution

The fourth proportional to 20,116.08, 30,355.02 and 19,421.10 is: 29,306.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,116.08 : 30,355.02 = 19,421.10 : x
  2. Step 2: Convert to fraction form
    20,116.08/30,355.02 = 19,421.10/x
  3. Step 3: Cross multiply
    20,116.08x = 30,355.02 × 19,421.10
  4. Step 4: Simplify right side
    20,116.08x = 589,527,878.92
  5. Step 5: Solve for x
    x = 589,527,878.92/20,116.08
  6. Step 6: Final answer
    x = 29,306.30

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Half scale
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Double scale
Find fourth proportional to 20,117.08, 30,356.53 and 19,422.10
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.