Home / 15,315.03-21,134.61-8,600.76

Finding the Fourth Proportional to 15,315.03, 21,134.61 and 8,600.76

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Solution

The fourth proportional to 15,315.03, 21,134.61 and 8,600.76 is: 11,868.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,315.03 : 21,134.61 = 8,600.76 : x
  2. Step 2: Convert to fraction form
    15,315.03/21,134.61 = 8,600.76/x
  3. Step 3: Cross multiply
    15,315.03x = 21,134.61 × 8,600.76
  4. Step 4: Simplify right side
    15,315.03x = 181,773,708.30
  5. Step 5: Solve for x
    x = 181,773,708.30/15,315.03
  6. Step 6: Final answer
    x = 11,868.98

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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.