Home / 39,032.85-53,865.42-21,128.01

Finding the Fourth Proportional to 39,032.85, 53,865.42 and 21,128.01

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Solution

The fourth proportional to 39,032.85, 53,865.42 and 21,128.01 is: 29,156.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,032.85 : 53,865.42 = 21,128.01 : x
  2. Step 2: Convert to fraction form
    39,032.85/53,865.42 = 21,128.01/x
  3. Step 3: Cross multiply
    39,032.85x = 53,865.42 × 21,128.01
  4. Step 4: Simplify right side
    39,032.85x = 1,138,069,132.41
  5. Step 5: Solve for x
    x = 1,138,069,132.41/39,032.85
  6. Step 6: Final answer
    x = 29,156.70

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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.