Home / 28,648.38-39,534-15,901.52

Finding the Fourth Proportional to 28,648.38, 39,534 and 15,901.52

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Solution

The fourth proportional to 28,648.38, 39,534 and 15,901.52 is: 21,943.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,648.38 : 39,534 = 15,901.52 : x
  2. Step 2: Convert to fraction form
    28,648.38/39,534 = 15,901.52/x
  3. Step 3: Cross multiply
    28,648.38x = 39,534 × 15,901.52
  4. Step 4: Simplify right side
    28,648.38x = 628,650,790.52
  5. Step 5: Solve for x
    x = 628,650,790.52/28,648.38
  6. Step 6: Final answer
    x = 21,943.68

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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.