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Finding the Fourth Proportional to 10,454.49, 14,421.11 and 6,728.49

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Solution

The fourth proportional to 10,454.49, 14,421.11 and 6,728.49 is: 9,281.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,454.49 : 14,421.11 = 6,728.49 : x
  2. Step 2: Convert to fraction form
    10,454.49/14,421.11 = 6,728.49/x
  3. Step 3: Cross multiply
    10,454.49x = 14,421.11 × 6,728.49
  4. Step 4: Simplify right side
    10,454.49x = 97,032,260.78
  5. Step 5: Solve for x
    x = 97,032,260.78/10,454.49
  6. Step 6: Final answer
    x = 9,281.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.