Home / 19,005.32-28,486.09-10,221.78

Finding the Fourth Proportional to 19,005.32, 28,486.09 and 10,221.78

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Solution

The fourth proportional to 19,005.32, 28,486.09 and 10,221.78 is: 15,320.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,005.32 : 28,486.09 = 10,221.78 : x
  2. Step 2: Convert to fraction form
    19,005.32/28,486.09 = 10,221.78/x
  3. Step 3: Cross multiply
    19,005.32x = 28,486.09 × 10,221.78
  4. Step 4: Simplify right side
    19,005.32x = 291,178,545.04
  5. Step 5: Solve for x
    x = 291,178,545.04/19,005.32
  6. Step 6: Final answer
    x = 15,320.90

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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.