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Finding the Fourth Proportional to 15,603.63, 21,532.60 and 9,230.55

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Solution

The fourth proportional to 15,603.63, 21,532.60 and 9,230.55 is: 12,737.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,603.63 : 21,532.60 = 9,230.55 : x
  2. Step 2: Convert to fraction form
    15,603.63/21,532.60 = 9,230.55/x
  3. Step 3: Cross multiply
    15,603.63x = 21,532.60 × 9,230.55
  4. Step 4: Simplify right side
    15,603.63x = 198,757,740.93
  5. Step 5: Solve for x
    x = 198,757,740.93/15,603.63
  6. Step 6: Final answer
    x = 12,737.92

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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.