Home / 30,679.59-42,324.62-19,340.13

Finding the Fourth Proportional to 30,679.59, 42,324.62 and 19,340.13

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Solution

The fourth proportional to 30,679.59, 42,324.62 and 19,340.13 is: 26,681.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,679.59 : 42,324.62 = 19,340.13 : x
  2. Step 2: Convert to fraction form
    30,679.59/42,324.62 = 19,340.13/x
  3. Step 3: Cross multiply
    30,679.59x = 42,324.62 × 19,340.13
  4. Step 4: Simplify right side
    30,679.59x = 818,563,556.30
  5. Step 5: Solve for x
    x = 818,563,556.30/30,679.59
  6. Step 6: Final answer
    x = 26,681.05

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Half scale
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Double scale
Find fourth proportional to 30,680.59, 42,325.99 and 19,341.13
Similar ratio
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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.