Home / 15,115.02-20,859.77-8,742.76

Finding the Fourth Proportional to 15,115.02, 20,859.77 and 8,742.76

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Solution

The fourth proportional to 15,115.02, 20,859.77 and 8,742.76 is: 12,065.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,115.02 : 20,859.77 = 8,742.76 : x
  2. Step 2: Convert to fraction form
    15,115.02/20,859.77 = 8,742.76/x
  3. Step 3: Cross multiply
    15,115.02x = 20,859.77 × 8,742.76
  4. Step 4: Simplify right side
    15,115.02x = 182,371,929.67
  5. Step 5: Solve for x
    x = 182,371,929.67/15,115.02
  6. Step 6: Final answer
    x = 12,065.61

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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.