Home / 15,811.04-21,819.27-8,641.07

Finding the Fourth Proportional to 15,811.04, 21,819.27 and 8,641.07

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Solution

The fourth proportional to 15,811.04, 21,819.27 and 8,641.07 is: 11,924.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,811.04 : 21,819.27 = 8,641.07 : x
  2. Step 2: Convert to fraction form
    15,811.04/21,819.27 = 8,641.07/x
  3. Step 3: Cross multiply
    15,811.04x = 21,819.27 × 8,641.07
  4. Step 4: Simplify right side
    15,811.04x = 188,541,839.42
  5. Step 5: Solve for x
    x = 188,541,839.42/15,811.04
  6. Step 6: Final answer
    x = 11,924.70

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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.