Home / 20,330.15-28,056.84-11,377.46

Finding the Fourth Proportional to 20,330.15, 28,056.84 and 11,377.46

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Solution

The fourth proportional to 20,330.15, 28,056.84 and 11,377.46 is: 15,701.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,330.15 : 28,056.84 = 11,377.46 : x
  2. Step 2: Convert to fraction form
    20,330.15/28,056.84 = 11,377.46/x
  3. Step 3: Cross multiply
    20,330.15x = 28,056.84 × 11,377.46
  4. Step 4: Simplify right side
    20,330.15x = 319,215,602.30
  5. Step 5: Solve for x
    x = 319,215,602.30/20,330.15
  6. Step 6: Final answer
    x = 15,701.59

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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.