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Finding the Fourth Proportional to 14,535.20, 20,047.20 and 12,303.20

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Solution

The fourth proportional to 14,535.20, 20,047.20 and 12,303.20 is: 16,968.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,535.20 : 20,047.20 = 12,303.20 : x
  2. Step 2: Convert to fraction form
    14,535.20/20,047.20 = 12,303.20/x
  3. Step 3: Cross multiply
    14,535.20x = 20,047.20 × 12,303.20
  4. Step 4: Simplify right side
    14,535.20x = 246,644,711.04
  5. Step 5: Solve for x
    x = 246,644,711.04/14,535.20
  6. Step 6: Final answer
    x = 16,968.79

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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.