Home / 28,545.72-39,389.58-15,970.20

Finding the Fourth Proportional to 28,545.72, 39,389.58 and 15,970.20

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Solution

The fourth proportional to 28,545.72, 39,389.58 and 15,970.20 is: 22,036.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,545.72 : 39,389.58 = 15,970.20 : x
  2. Step 2: Convert to fraction form
    28,545.72/39,389.58 = 15,970.20/x
  3. Step 3: Cross multiply
    28,545.72x = 39,389.58 × 15,970.20
  4. Step 4: Simplify right side
    28,545.72x = 629,059,470.52
  5. Step 5: Solve for x
    x = 629,059,470.52/28,545.72
  6. Step 6: Final answer
    x = 22,036.91

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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.