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Finding the Fourth Proportional to 10,999.10, 16,498.65 and 10,307.90

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Solution

The fourth proportional to 10,999.10, 16,498.65 and 10,307.90 is: 15,461.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,999.10 : 16,498.65 = 10,307.90 : x
  2. Step 2: Convert to fraction form
    10,999.10/16,498.65 = 10,307.90/x
  3. Step 3: Cross multiply
    10,999.10x = 16,498.65 × 10,307.90
  4. Step 4: Simplify right side
    10,999.10x = 170,066,434.34
  5. Step 5: Solve for x
    x = 170,066,434.34/10,999.10
  6. Step 6: Final answer
    x = 15,461.85

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Similar ratio
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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.