Home / 15,649.11-21,595.85-8,575.78

Finding the Fourth Proportional to 15,649.11, 21,595.85 and 8,575.78

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Solution

The fourth proportional to 15,649.11, 21,595.85 and 8,575.78 is: 11,834.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,649.11 : 21,595.85 = 8,575.78 : x
  2. Step 2: Convert to fraction form
    15,649.11/21,595.85 = 8,575.78/x
  3. Step 3: Cross multiply
    15,649.11x = 21,595.85 × 8,575.78
  4. Step 4: Simplify right side
    15,649.11x = 185,201,258.51
  5. Step 5: Solve for x
    x = 185,201,258.51/15,649.11
  6. Step 6: Final answer
    x = 11,834.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.