Home / 28,434.38-42,649.76-11,105.65

Finding the Fourth Proportional to 28,434.38, 42,649.76 and 11,105.65

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Solution

The fourth proportional to 28,434.38, 42,649.76 and 11,105.65 is: 16,657.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,434.38 : 42,649.76 = 11,105.65 : x
  2. Step 2: Convert to fraction form
    28,434.38/42,649.76 = 11,105.65/x
  3. Step 3: Cross multiply
    28,434.38x = 42,649.76 × 11,105.65
  4. Step 4: Simplify right side
    28,434.38x = 473,653,388.22
  5. Step 5: Solve for x
    x = 473,653,388.22/28,434.38
  6. Step 6: Final answer
    x = 16,657.77

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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.