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Finding the Fourth Proportional to 15,989.64, 22,019.76 and 15,941.04

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Solution

The fourth proportional to 15,989.64, 22,019.76 and 15,941.04 is: 21,952.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,989.64 : 22,019.76 = 15,941.04 : x
  2. Step 2: Convert to fraction form
    15,989.64/22,019.76 = 15,941.04/x
  3. Step 3: Cross multiply
    15,989.64x = 22,019.76 × 15,941.04
  4. Step 4: Simplify right side
    15,989.64x = 351,017,874.95
  5. Step 5: Solve for x
    x = 351,017,874.95/15,989.64
  6. Step 6: Final answer
    x = 21,952.83

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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.