Home / 39,040.83-53,875.69-21,135.68

Finding the Fourth Proportional to 39,040.83, 53,875.69 and 21,135.68

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Solution

The fourth proportional to 39,040.83, 53,875.69 and 21,135.68 is: 29,166.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,040.83 : 53,875.69 = 21,135.68 : x
  2. Step 2: Convert to fraction form
    39,040.83/53,875.69 = 21,135.68/x
  3. Step 3: Cross multiply
    39,040.83x = 53,875.69 × 21,135.68
  4. Step 4: Simplify right side
    39,040.83x = 1,138,699,343.62
  5. Step 5: Solve for x
    x = 1,138,699,343.62/39,040.83
  6. Step 6: Final answer
    x = 29,166.88

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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.