Home / 30,586.69-42,206.20-17,155.18

Finding the Fourth Proportional to 30,586.69, 42,206.20 and 17,155.18

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Solution

The fourth proportional to 30,586.69, 42,206.20 and 17,155.18 is: 23,672.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,586.69 : 42,206.20 = 17,155.18 : x
  2. Step 2: Convert to fraction form
    30,586.69/42,206.20 = 17,155.18/x
  3. Step 3: Cross multiply
    30,586.69x = 42,206.20 × 17,155.18
  4. Step 4: Simplify right side
    30,586.69x = 724,054,958.12
  5. Step 5: Solve for x
    x = 724,054,958.12/30,586.69
  6. Step 6: Final answer
    x = 23,672.22

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Half scale
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Double scale
Find fourth proportional to 30,587.69, 42,207.58 and 17,156.18
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.