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Finding the Fourth Proportional to 19,281.72, 28,922.58 and 10,065.72

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Solution

The fourth proportional to 19,281.72, 28,922.58 and 10,065.72 is: 15,098.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,281.72 : 28,922.58 = 10,065.72 : x
  2. Step 2: Convert to fraction form
    19,281.72/28,922.58 = 10,065.72/x
  3. Step 3: Cross multiply
    19,281.72x = 28,922.58 × 10,065.72
  4. Step 4: Simplify right side
    19,281.72x = 291,126,591.96
  5. Step 5: Solve for x
    x = 291,126,591.96/19,281.72
  6. Step 6: Final answer
    x = 15,098.58

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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.