Home / 39,040.29-53,876.03-21,135.68

Finding the Fourth Proportional to 39,040.29, 53,876.03 and 21,135.68

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Solution

The fourth proportional to 39,040.29, 53,876.03 and 21,135.68 is: 29,167.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,040.29 : 53,876.03 = 21,135.68 : x
  2. Step 2: Convert to fraction form
    39,040.29/53,876.03 = 21,135.68/x
  3. Step 3: Cross multiply
    39,040.29x = 53,876.03 × 21,135.68
  4. Step 4: Simplify right side
    39,040.29x = 1,138,706,154.69
  5. Step 5: Solve for x
    x = 1,138,706,154.69/39,040.29
  6. Step 6: Final answer
    x = 29,167.46

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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.