Home / 39,224.16-54,129.69-21,319.20

Finding the Fourth Proportional to 39,224.16, 54,129.69 and 21,319.20

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Solution

The fourth proportional to 39,224.16, 54,129.69 and 21,319.20 is: 29,420.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,224.16 : 54,129.69 = 21,319.20 : x
  2. Step 2: Convert to fraction form
    39,224.16/54,129.69 = 21,319.20/x
  3. Step 3: Cross multiply
    39,224.16x = 54,129.69 × 21,319.20
  4. Step 4: Simplify right side
    39,224.16x = 1,154,001,687.05
  5. Step 5: Solve for x
    x = 1,154,001,687.05/39,224.16
  6. Step 6: Final answer
    x = 29,420.69

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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.