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Finding the Fourth Proportional to 19,010.65, 28,500.57 and 7,925.65

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Solution

The fourth proportional to 19,010.65, 28,500.57 and 7,925.65 is: 11,882.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,010.65 : 28,500.57 = 7,925.65 : x
  2. Step 2: Convert to fraction form
    19,010.65/28,500.57 = 7,925.65/x
  3. Step 3: Cross multiply
    19,010.65x = 28,500.57 × 7,925.65
  4. Step 4: Simplify right side
    19,010.65x = 225,885,542.62
  5. Step 5: Solve for x
    x = 225,885,542.62/19,010.65
  6. Step 6: Final answer
    x = 11,882.05

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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.