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Finding the Fourth Proportional to 19,953.59, 29,948.90 and 10,099.85

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Solution

The fourth proportional to 19,953.59, 29,948.90 and 10,099.85 is: 15,159.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,953.59 : 29,948.90 = 10,099.85 : x
  2. Step 2: Convert to fraction form
    19,953.59/29,948.90 = 10,099.85/x
  3. Step 3: Cross multiply
    19,953.59x = 29,948.90 × 10,099.85
  4. Step 4: Simplify right side
    19,953.59x = 302,479,197.42
  5. Step 5: Solve for x
    x = 302,479,197.42/19,953.59
  6. Step 6: Final answer
    x = 15,159.14

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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.