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Finding the Fourth Proportional to 15,277.80, 22,916.70 and 8,279.40

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Solution

The fourth proportional to 15,277.80, 22,916.70 and 8,279.40 is: 12,419.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,277.80 : 22,916.70 = 8,279.40 : x
  2. Step 2: Convert to fraction form
    15,277.80/22,916.70 = 8,279.40/x
  3. Step 3: Cross multiply
    15,277.80x = 22,916.70 × 8,279.40
  4. Step 4: Simplify right side
    15,277.80x = 189,736,525.98
  5. Step 5: Solve for x
    x = 189,736,525.98/15,277.80
  6. Step 6: Final answer
    x = 12,419.10

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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.