Home / 39,224.33-54,129.63-21,319.29

Finding the Fourth Proportional to 39,224.33, 54,129.63 and 21,319.29

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Solution

The fourth proportional to 39,224.33, 54,129.63 and 21,319.29 is: 29,420.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,224.33 : 54,129.63 = 21,319.29 : x
  2. Step 2: Convert to fraction form
    39,224.33/54,129.63 = 21,319.29/x
  3. Step 3: Cross multiply
    39,224.33x = 54,129.63 × 21,319.29
  4. Step 4: Simplify right side
    39,224.33x = 1,154,005,279.56
  5. Step 5: Solve for x
    x = 1,154,005,279.56/39,224.33
  6. Step 6: Final answer
    x = 29,420.65

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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.