Home / 15,356.14-21,191.24-8,641.78

Finding the Fourth Proportional to 15,356.14, 21,191.24 and 8,641.78

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Solution

The fourth proportional to 15,356.14, 21,191.24 and 8,641.78 is: 11,925.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,356.14 : 21,191.24 = 8,641.78 : x
  2. Step 2: Convert to fraction form
    15,356.14/21,191.24 = 8,641.78/x
  3. Step 3: Cross multiply
    15,356.14x = 21,191.24 × 8,641.78
  4. Step 4: Simplify right side
    15,356.14x = 183,130,002.63
  5. Step 5: Solve for x
    x = 183,130,002.63/15,356.14
  6. Step 6: Final answer
    x = 11,925.53

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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.