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Finding the Fourth Proportional to 15,240.70, 22,861.05 and 12,648.70

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Solution

The fourth proportional to 15,240.70, 22,861.05 and 12,648.70 is: 18,973.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,240.70 : 22,861.05 = 12,648.70 : x
  2. Step 2: Convert to fraction form
    15,240.70/22,861.05 = 12,648.70/x
  3. Step 3: Cross multiply
    15,240.70x = 22,861.05 × 12,648.70
  4. Step 4: Simplify right side
    15,240.70x = 289,162,563.14
  5. Step 5: Solve for x
    x = 289,162,563.14/15,240.70
  6. Step 6: Final answer
    x = 18,973.05

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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.