Home / 20,951.16-31,426.48-8,471.08

Finding the Fourth Proportional to 20,951.16, 31,426.48 and 8,471.08

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Solution

The fourth proportional to 20,951.16, 31,426.48 and 8,471.08 is: 12,706.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,951.16 : 31,426.48 = 8,471.08 : x
  2. Step 2: Convert to fraction form
    20,951.16/31,426.48 = 8,471.08/x
  3. Step 3: Cross multiply
    20,951.16x = 31,426.48 × 8,471.08
  4. Step 4: Simplify right side
    20,951.16x = 266,216,276.07
  5. Step 5: Solve for x
    x = 266,216,276.07/20,951.16
  6. Step 6: Final answer
    x = 12,706.52

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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.