Home / 14,712.40-20,298.90-8,423.56

Finding the Fourth Proportional to 14,712.40, 20,298.90 and 8,423.56

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Solution

The fourth proportional to 14,712.40, 20,298.90 and 8,423.56 is: 11,622.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,712.40 : 20,298.90 = 8,423.56 : x
  2. Step 2: Convert to fraction form
    14,712.40/20,298.90 = 8,423.56/x
  3. Step 3: Cross multiply
    14,712.40x = 20,298.90 × 8,423.56
  4. Step 4: Simplify right side
    14,712.40x = 170,989,002.08
  5. Step 5: Solve for x
    x = 170,989,002.08/14,712.40
  6. Step 6: Final answer
    x = 11,622.10

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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.