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Finding the Fourth Proportional to 14,047.88, 21,077.98 and 6,657.62

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Solution

The fourth proportional to 14,047.88, 21,077.98 and 6,657.62 is: 9,989.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,047.88 : 21,077.98 = 6,657.62 : x
  2. Step 2: Convert to fraction form
    14,047.88/21,077.98 = 6,657.62/x
  3. Step 3: Cross multiply
    14,047.88x = 21,077.98 × 6,657.62
  4. Step 4: Simplify right side
    14,047.88x = 140,329,181.21
  5. Step 5: Solve for x
    x = 140,329,181.21/14,047.88
  6. Step 6: Final answer
    x = 9,989.35

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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.