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Finding the Fourth Proportional to 14,534.40, 21,751.20 and 8,695.20

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Solution

The fourth proportional to 14,534.40, 21,751.20 and 8,695.20 is: 13,012.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,534.40 : 21,751.20 = 8,695.20 : x
  2. Step 2: Convert to fraction form
    14,534.40/21,751.20 = 8,695.20/x
  3. Step 3: Cross multiply
    14,534.40x = 21,751.20 × 8,695.20
  4. Step 4: Simplify right side
    14,534.40x = 189,131,034.24
  5. Step 5: Solve for x
    x = 189,131,034.24/14,534.40
  6. Step 6: Final answer
    x = 13,012.65

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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.