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Finding the Fourth Proportional to 15,307.75, 22,970.40 and 8,287.75

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Solution

The fourth proportional to 15,307.75, 22,970.40 and 8,287.75 is: 12,436.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,307.75 : 22,970.40 = 8,287.75 : x
  2. Step 2: Convert to fraction form
    15,307.75/22,970.40 = 8,287.75/x
  3. Step 3: Cross multiply
    15,307.75x = 22,970.40 × 8,287.75
  4. Step 4: Simplify right side
    15,307.75x = 190,372,932.60
  5. Step 5: Solve for x
    x = 190,372,932.60/15,307.75
  6. Step 6: Final answer
    x = 12,436.38

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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.