Home / 28,191.74-38,904.60-15,445.37

Finding the Fourth Proportional to 28,191.74, 38,904.60 and 15,445.37

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Solution

The fourth proportional to 28,191.74, 38,904.60 and 15,445.37 is: 21,314.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,191.74 : 38,904.60 = 15,445.37 : x
  2. Step 2: Convert to fraction form
    28,191.74/38,904.60 = 15,445.37/x
  3. Step 3: Cross multiply
    28,191.74x = 38,904.60 × 15,445.37
  4. Step 4: Simplify right side
    28,191.74x = 600,895,864.48
  5. Step 5: Solve for x
    x = 600,895,864.48/28,191.74
  6. Step 6: Final answer
    x = 21,314.61

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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.