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Finding the Fourth Proportional to 9,987.60, 14,962.68 and 8,354.64

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Solution

The fourth proportional to 9,987.60, 14,962.68 and 8,354.64 is: 12,516.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,987.60 : 14,962.68 = 8,354.64 : x
  2. Step 2: Convert to fraction form
    9,987.60/14,962.68 = 8,354.64/x
  3. Step 3: Cross multiply
    9,987.60x = 14,962.68 × 8,354.64
  4. Step 4: Simplify right side
    9,987.60x = 125,007,804.84
  5. Step 5: Solve for x
    x = 125,007,804.84/9,987.60
  6. Step 6: Final answer
    x = 12,516.30

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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.