Home / 31,800.15-47,700.23-28,191.60

Finding the Fourth Proportional to 31,800.15, 47,700.23 and 28,191.60

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Solution

The fourth proportional to 31,800.15, 47,700.23 and 28,191.60 is: 42,287.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,800.15 : 47,700.23 = 28,191.60 : x
  2. Step 2: Convert to fraction form
    31,800.15/47,700.23 = 28,191.60/x
  3. Step 3: Cross multiply
    31,800.15x = 47,700.23 × 28,191.60
  4. Step 4: Simplify right side
    31,800.15x = 1,344,745,663.11
  5. Step 5: Solve for x
    x = 1,344,745,663.11/31,800.15
  6. Step 6: Final answer
    x = 42,287.40

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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.