Home / 39,039.97-53,875.59-21,135.36

Finding the Fourth Proportional to 39,039.97, 53,875.59 and 21,135.36

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Solution

The fourth proportional to 39,039.97, 53,875.59 and 21,135.36 is: 29,167.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,039.97 : 53,875.59 = 21,135.36 : x
  2. Step 2: Convert to fraction form
    39,039.97/53,875.59 = 21,135.36/x
  3. Step 3: Cross multiply
    39,039.97x = 53,875.59 × 21,135.36
  4. Step 4: Simplify right side
    39,039.97x = 1,138,679,989.86
  5. Step 5: Solve for x
    x = 1,138,679,989.86/39,039.97
  6. Step 6: Final answer
    x = 29,167.03

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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.