Home / 28,761.48-39,691.64-16,186.68

Finding the Fourth Proportional to 28,761.48, 39,691.64 and 16,186.68

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Solution

The fourth proportional to 28,761.48, 39,691.64 and 16,186.68 is: 22,338.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,761.48 : 39,691.64 = 16,186.68 : x
  2. Step 2: Convert to fraction form
    28,761.48/39,691.64 = 16,186.68/x
  3. Step 3: Cross multiply
    28,761.48x = 39,691.64 × 16,186.68
  4. Step 4: Simplify right side
    28,761.48x = 642,475,875.36
  5. Step 5: Solve for x
    x = 642,475,875.36/28,761.48
  6. Step 6: Final answer
    x = 22,338.07

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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.