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Finding the Fourth Proportional to 9,988.20, 14,881.77 and 9,845.64

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Solution

The fourth proportional to 9,988.20, 14,881.77 and 9,845.64 is: 14,669.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,988.20 : 14,881.77 = 9,845.64 : x
  2. Step 2: Convert to fraction form
    9,988.20/14,881.77 = 9,845.64/x
  3. Step 3: Cross multiply
    9,988.20x = 14,881.77 × 9,845.64
  4. Step 4: Simplify right side
    9,988.20x = 146,520,549.98
  5. Step 5: Solve for x
    x = 146,520,549.98/9,988.20
  6. Step 6: Final answer
    x = 14,669.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.