Home / 28,663.38-39,557.82-15,917.35

Finding the Fourth Proportional to 28,663.38, 39,557.82 and 15,917.35

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Solution

The fourth proportional to 28,663.38, 39,557.82 and 15,917.35 is: 21,967.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,663.38 : 39,557.82 = 15,917.35 : x
  2. Step 2: Convert to fraction form
    28,663.38/39,557.82 = 15,917.35/x
  3. Step 3: Cross multiply
    28,663.38x = 39,557.82 × 15,917.35
  4. Step 4: Simplify right side
    28,663.38x = 629,655,666.18
  5. Step 5: Solve for x
    x = 629,655,666.18/28,663.38
  6. Step 6: Final answer
    x = 21,967.25

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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.