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Finding the Fourth Proportional to 12,069.72, 16,656.21 and 7,354.02

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Solution

The fourth proportional to 12,069.72, 16,656.21 and 7,354.02 is: 10,148.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,069.72 : 16,656.21 = 7,354.02 : x
  2. Step 2: Convert to fraction form
    12,069.72/16,656.21 = 7,354.02/x
  3. Step 3: Cross multiply
    12,069.72x = 16,656.21 × 7,354.02
  4. Step 4: Simplify right side
    12,069.72x = 122,490,101.46
  5. Step 5: Solve for x
    x = 122,490,101.46/12,069.72
  6. Step 6: Final answer
    x = 10,148.55

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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.