Home / 15,152.28-20,909.98-8,437.76

Finding the Fourth Proportional to 15,152.28, 20,909.98 and 8,437.76

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Solution

The fourth proportional to 15,152.28, 20,909.98 and 8,437.76 is: 11,644.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,152.28 : 20,909.98 = 8,437.76 : x
  2. Step 2: Convert to fraction form
    15,152.28/20,909.98 = 8,437.76/x
  3. Step 3: Cross multiply
    15,152.28x = 20,909.98 × 8,437.76
  4. Step 4: Simplify right side
    15,152.28x = 176,433,392.84
  5. Step 5: Solve for x
    x = 176,433,392.84/15,152.28
  6. Step 6: Final answer
    x = 11,644.02

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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.