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Finding the Fourth Proportional to 15,307.80, 22,961.70 and 15,210.60

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Solution

The fourth proportional to 15,307.80, 22,961.70 and 15,210.60 is: 22,815.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,307.80 : 22,961.70 = 15,210.60 : x
  2. Step 2: Convert to fraction form
    15,307.80/22,961.70 = 15,210.60/x
  3. Step 3: Cross multiply
    15,307.80x = 22,961.70 × 15,210.60
  4. Step 4: Simplify right side
    15,307.80x = 349,261,234.02
  5. Step 5: Solve for x
    x = 349,261,234.02/15,307.80
  6. Step 6: Final answer
    x = 22,815.90

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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.