Home / 14,839.30-20,478.10-8,124.87

Finding the Fourth Proportional to 14,839.30, 20,478.10 and 8,124.87

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Solution

The fourth proportional to 14,839.30, 20,478.10 and 8,124.87 is: 11,212.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,839.30 : 20,478.10 = 8,124.87 : x
  2. Step 2: Convert to fraction form
    14,839.30/20,478.10 = 8,124.87/x
  3. Step 3: Cross multiply
    14,839.30x = 20,478.10 × 8,124.87
  4. Step 4: Simplify right side
    14,839.30x = 166,381,900.35
  5. Step 5: Solve for x
    x = 166,381,900.35/14,839.30
  6. Step 6: Final answer
    x = 11,212.25

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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.