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Finding the Fourth Proportional to 15,877.76, 23,803.61 and 7,970.72

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Solution

The fourth proportional to 15,877.76, 23,803.61 and 7,970.72 is: 11,949.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,877.76 : 23,803.61 = 7,970.72 : x
  2. Step 2: Convert to fraction form
    15,877.76/23,803.61 = 7,970.72/x
  3. Step 3: Cross multiply
    15,877.76x = 23,803.61 × 7,970.72
  4. Step 4: Simplify right side
    15,877.76x = 189,731,751.43
  5. Step 5: Solve for x
    x = 189,731,751.43/15,877.76
  6. Step 6: Final answer
    x = 11,949.53

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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.