Home / 15,013.56-20,719.50-8,641.12

Finding the Fourth Proportional to 15,013.56, 20,719.50 and 8,641.12

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Solution

The fourth proportional to 15,013.56, 20,719.50 and 8,641.12 is: 11,925.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,013.56 : 20,719.50 = 8,641.12 : x
  2. Step 2: Convert to fraction form
    15,013.56/20,719.50 = 8,641.12/x
  3. Step 3: Cross multiply
    15,013.56x = 20,719.50 × 8,641.12
  4. Step 4: Simplify right side
    15,013.56x = 179,039,685.84
  5. Step 5: Solve for x
    x = 179,039,685.84/15,013.56
  6. Step 6: Final answer
    x = 11,925.20

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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.