Home / 15,310.86-21,124.35-8,595.78

Finding the Fourth Proportional to 15,310.86, 21,124.35 and 8,595.78

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Solution

The fourth proportional to 15,310.86, 21,124.35 and 8,595.78 is: 11,859.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,310.86 : 21,124.35 = 8,595.78 : x
  2. Step 2: Convert to fraction form
    15,310.86/21,124.35 = 8,595.78/x
  3. Step 3: Cross multiply
    15,310.86x = 21,124.35 × 8,595.78
  4. Step 4: Simplify right side
    15,310.86x = 181,580,265.24
  5. Step 5: Solve for x
    x = 181,580,265.24/15,310.86
  6. Step 6: Final answer
    x = 11,859.57

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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.