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Finding the Fourth Proportional to 9,742.80, 14,581.80 and 8,576.40

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Solution

The fourth proportional to 9,742.80, 14,581.80 and 8,576.40 is: 12,836.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,742.80 : 14,581.80 = 8,576.40 : x
  2. Step 2: Convert to fraction form
    9,742.80/14,581.80 = 8,576.40/x
  3. Step 3: Cross multiply
    9,742.80x = 14,581.80 × 8,576.40
  4. Step 4: Simplify right side
    9,742.80x = 125,059,349.52
  5. Step 5: Solve for x
    x = 125,059,349.52/9,742.80
  6. Step 6: Final answer
    x = 12,836.08

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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.