Home / 28,218.15-38,940.48-16,281.18

Finding the Fourth Proportional to 28,218.15, 38,940.48 and 16,281.18

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Solution

The fourth proportional to 28,218.15, 38,940.48 and 16,281.18 is: 22,467.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,218.15 : 38,940.48 = 16,281.18 : x
  2. Step 2: Convert to fraction form
    28,218.15/38,940.48 = 16,281.18/x
  3. Step 3: Cross multiply
    28,218.15x = 38,940.48 × 16,281.18
  4. Step 4: Simplify right side
    28,218.15x = 633,996,964.17
  5. Step 5: Solve for x
    x = 633,996,964.17/28,218.15
  6. Step 6: Final answer
    x = 22,467.70

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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.