Home / 15,878.13-21,912.35-10,298.85

Finding the Fourth Proportional to 15,878.13, 21,912.35 and 10,298.85

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Solution

The fourth proportional to 15,878.13, 21,912.35 and 10,298.85 is: 14,212.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,878.13 : 21,912.35 = 10,298.85 : x
  2. Step 2: Convert to fraction form
    15,878.13/21,912.35 = 10,298.85/x
  3. Step 3: Cross multiply
    15,878.13x = 21,912.35 × 10,298.85
  4. Step 4: Simplify right side
    15,878.13x = 225,672,005.80
  5. Step 5: Solve for x
    x = 225,672,005.80/15,878.13
  6. Step 6: Final answer
    x = 14,212.76

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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.