Home / 31,276.20-46,909.02-8,781.72

Finding the Fourth Proportional to 31,276.20, 46,909.02 and 8,781.72

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Solution

The fourth proportional to 31,276.20, 46,909.02 and 8,781.72 is: 13,171.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,276.20 : 46,909.02 = 8,781.72 : x
  2. Step 2: Convert to fraction form
    31,276.20/46,909.02 = 8,781.72/x
  3. Step 3: Cross multiply
    31,276.20x = 46,909.02 × 8,781.72
  4. Step 4: Simplify right side
    31,276.20x = 411,942,055.02
  5. Step 5: Solve for x
    x = 411,942,055.02/31,276.20
  6. Step 6: Final answer
    x = 13,171.10

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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.