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Finding the Fourth Proportional to 13,350.88, 20,038.46 and 7,116.12

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Solution

The fourth proportional to 13,350.88, 20,038.46 and 7,116.12 is: 10,680.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,350.88 : 20,038.46 = 7,116.12 : x
  2. Step 2: Convert to fraction form
    13,350.88/20,038.46 = 7,116.12/x
  3. Step 3: Cross multiply
    13,350.88x = 20,038.46 × 7,116.12
  4. Step 4: Simplify right side
    13,350.88x = 142,596,085.98
  5. Step 5: Solve for x
    x = 142,596,085.98/13,350.88
  6. Step 6: Final answer
    x = 10,680.65

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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.