Home / 28,117.08-38,786.22-18,034.31

Finding the Fourth Proportional to 28,117.08, 38,786.22 and 18,034.31

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Solution

The fourth proportional to 28,117.08, 38,786.22 and 18,034.31 is: 24,877.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,117.08 : 38,786.22 = 18,034.31 : x
  2. Step 2: Convert to fraction form
    28,117.08/38,786.22 = 18,034.31/x
  3. Step 3: Cross multiply
    28,117.08x = 38,786.22 × 18,034.31
  4. Step 4: Simplify right side
    28,117.08x = 699,482,521.28
  5. Step 5: Solve for x
    x = 699,482,521.28/28,117.08
  6. Step 6: Final answer
    x = 24,877.50

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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.