Home / 28,238.40-38,967.84-16,305.12

Finding the Fourth Proportional to 28,238.40, 38,967.84 and 16,305.12

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Solution

The fourth proportional to 28,238.40, 38,967.84 and 16,305.12 is: 22,500.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,238.40 : 38,967.84 = 16,305.12 : x
  2. Step 2: Convert to fraction form
    28,238.40/38,967.84 = 16,305.12/x
  3. Step 3: Cross multiply
    28,238.40x = 38,967.84 × 16,305.12
  4. Step 4: Simplify right side
    28,238.40x = 635,375,307.34
  5. Step 5: Solve for x
    x = 635,375,307.34/28,238.40
  6. Step 6: Final answer
    x = 22,500.40

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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.