Home / 14,475.68-19,980.10-8,191.70

Finding the Fourth Proportional to 14,475.68, 19,980.10 and 8,191.70

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Solution

The fourth proportional to 14,475.68, 19,980.10 and 8,191.70 is: 11,306.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,475.68 : 19,980.10 = 8,191.70 : x
  2. Step 2: Convert to fraction form
    14,475.68/19,980.10 = 8,191.70/x
  3. Step 3: Cross multiply
    14,475.68x = 19,980.10 × 8,191.70
  4. Step 4: Simplify right side
    14,475.68x = 163,670,985.17
  5. Step 5: Solve for x
    x = 163,670,985.17/14,475.68
  6. Step 6: Final answer
    x = 11,306.62

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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.