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Finding the Fourth Proportional to 15,145.80, 22,718.70 and 9,605.40

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Solution

The fourth proportional to 15,145.80, 22,718.70 and 9,605.40 is: 14,408.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,145.80 : 22,718.70 = 9,605.40 : x
  2. Step 2: Convert to fraction form
    15,145.80/22,718.70 = 9,605.40/x
  3. Step 3: Cross multiply
    15,145.80x = 22,718.70 × 9,605.40
  4. Step 4: Simplify right side
    15,145.80x = 218,222,200.98
  5. Step 5: Solve for x
    x = 218,222,200.98/15,145.80
  6. Step 6: Final answer
    x = 14,408.10

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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.