Home / 39,032.28-53,864.68-21,127.28

Finding the Fourth Proportional to 39,032.28, 53,864.68 and 21,127.28

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Solution

The fourth proportional to 39,032.28, 53,864.68 and 21,127.28 is: 29,155.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,032.28 : 53,864.68 = 21,127.28 : x
  2. Step 2: Convert to fraction form
    39,032.28/53,864.68 = 21,127.28/x
  3. Step 3: Cross multiply
    39,032.28x = 53,864.68 × 21,127.28
  4. Step 4: Simplify right side
    39,032.28x = 1,138,014,176.47
  5. Step 5: Solve for x
    x = 1,138,014,176.47/39,032.28
  6. Step 6: Final answer
    x = 29,155.72

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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.