Home / 21,865.65-30,176.92-13,372.73

Finding the Fourth Proportional to 21,865.65, 30,176.92 and 13,372.73

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Solution

The fourth proportional to 21,865.65, 30,176.92 and 13,372.73 is: 18,455.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,865.65 : 30,176.92 = 13,372.73 : x
  2. Step 2: Convert to fraction form
    21,865.65/30,176.92 = 13,372.73/x
  3. Step 3: Cross multiply
    21,865.65x = 30,176.92 × 13,372.73
  4. Step 4: Simplify right side
    21,865.65x = 403,547,803.39
  5. Step 5: Solve for x
    x = 403,547,803.39/21,865.65
  6. Step 6: Final answer
    x = 18,455.79

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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.