Home / 15,356.20-21,191.30-8,641.83

Finding the Fourth Proportional to 15,356.20, 21,191.30 and 8,641.83

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Solution

The fourth proportional to 15,356.20, 21,191.30 and 8,641.83 is: 11,925.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,356.20 : 21,191.30 = 8,641.83 : x
  2. Step 2: Convert to fraction form
    15,356.20/21,191.30 = 8,641.83/x
  3. Step 3: Cross multiply
    15,356.20x = 21,191.30 × 8,641.83
  4. Step 4: Simplify right side
    15,356.20x = 183,131,612.08
  5. Step 5: Solve for x
    x = 183,131,612.08/15,356.20
  6. Step 6: Final answer
    x = 11,925.58

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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.