Home / 39,292.28-54,224.40-21,388.49

Finding the Fourth Proportional to 39,292.28, 54,224.40 and 21,388.49

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Solution

The fourth proportional to 39,292.28, 54,224.40 and 21,388.49 is: 29,516.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,292.28 : 54,224.40 = 21,388.49 : x
  2. Step 2: Convert to fraction form
    39,292.28/54,224.40 = 21,388.49/x
  3. Step 3: Cross multiply
    39,292.28x = 54,224.40 × 21,388.49
  4. Step 4: Simplify right side
    39,292.28x = 1,159,778,037.16
  5. Step 5: Solve for x
    x = 1,159,778,037.16/39,292.28
  6. Step 6: Final answer
    x = 29,516.69

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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.