Home / 18,931.45-28,397.17-6,445.04

Finding the Fourth Proportional to 18,931.45, 28,397.17 and 6,445.04

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Solution

The fourth proportional to 18,931.45, 28,397.17 and 6,445.04 is: 9,667.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,931.45 : 28,397.17 = 6,445.04 : x
  2. Step 2: Convert to fraction form
    18,931.45/28,397.17 = 6,445.04/x
  3. Step 3: Cross multiply
    18,931.45x = 28,397.17 × 6,445.04
  4. Step 4: Simplify right side
    18,931.45x = 183,020,951.42
  5. Step 5: Solve for x
    x = 183,020,951.42/18,931.45
  6. Step 6: Final answer
    x = 9,667.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.