Home / 31,445.10-47,167.68-8,071.56

Finding the Fourth Proportional to 31,445.10, 47,167.68 and 8,071.56

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Solution

The fourth proportional to 31,445.10, 47,167.68 and 8,071.56 is: 12,107.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,445.10 : 47,167.68 = 8,071.56 : x
  2. Step 2: Convert to fraction form
    31,445.10/47,167.68 = 8,071.56/x
  3. Step 3: Cross multiply
    31,445.10x = 47,167.68 × 8,071.56
  4. Step 4: Simplify right side
    31,445.10x = 380,716,759.18
  5. Step 5: Solve for x
    x = 380,716,759.18/31,445.10
  6. Step 6: Final answer
    x = 12,107.35

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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.