Home / 38,311.88-52,869.38-21,316.15

Finding the Fourth Proportional to 38,311.88, 52,869.38 and 21,316.15

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Solution

The fourth proportional to 38,311.88, 52,869.38 and 21,316.15 is: 29,415.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,311.88 : 52,869.38 = 21,316.15 : x
  2. Step 2: Convert to fraction form
    38,311.88/52,869.38 = 21,316.15/x
  3. Step 3: Cross multiply
    38,311.88x = 52,869.38 × 21,316.15
  4. Step 4: Simplify right side
    38,311.88x = 1,126,971,263.56
  5. Step 5: Solve for x
    x = 1,126,971,263.56/38,311.88
  6. Step 6: Final answer
    x = 29,415.72

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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.