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Finding the Fourth Proportional to 9,807.30, 14,689.35 and 8,712.90

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Solution

The fourth proportional to 9,807.30, 14,689.35 and 8,712.90 is: 13,050.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,807.30 : 14,689.35 = 8,712.90 : x
  2. Step 2: Convert to fraction form
    9,807.30/14,689.35 = 8,712.90/x
  3. Step 3: Cross multiply
    9,807.30x = 14,689.35 × 8,712.90
  4. Step 4: Simplify right side
    9,807.30x = 127,986,837.62
  5. Step 5: Solve for x
    x = 127,986,837.62/9,807.30
  6. Step 6: Final answer
    x = 13,050.16

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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.