Home / 20,426.15-28,191.14-12,472.98

Finding the Fourth Proportional to 20,426.15, 28,191.14 and 12,472.98

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Solution

The fourth proportional to 20,426.15, 28,191.14 and 12,472.98 is: 17,214.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,426.15 : 28,191.14 = 12,472.98 : x
  2. Step 2: Convert to fraction form
    20,426.15/28,191.14 = 12,472.98/x
  3. Step 3: Cross multiply
    20,426.15x = 28,191.14 × 12,472.98
  4. Step 4: Simplify right side
    20,426.15x = 351,627,463.03
  5. Step 5: Solve for x
    x = 351,627,463.03/20,426.15
  6. Step 6: Final answer
    x = 17,214.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.