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Finding the Fourth Proportional to 18,483.20, 25,506.80 and 10,099.70

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Solution

The fourth proportional to 18,483.20, 25,506.80 and 10,099.70 is: 13,937.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,483.20 : 25,506.80 = 10,099.70 : x
  2. Step 2: Convert to fraction form
    18,483.20/25,506.80 = 10,099.70/x
  3. Step 3: Cross multiply
    18,483.20x = 25,506.80 × 10,099.70
  4. Step 4: Simplify right side
    18,483.20x = 257,610,849.93
  5. Step 5: Solve for x
    x = 257,610,849.93/18,483.20
  6. Step 6: Final answer
    x = 13,937.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.