Home / 21,867.93-30,175.02-12,306.63

Finding the Fourth Proportional to 21,867.93, 30,175.02 and 12,306.63

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Solution

The fourth proportional to 21,867.93, 30,175.02 and 12,306.63 is: 16,981.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,867.93 : 30,175.02 = 12,306.63 : x
  2. Step 2: Convert to fraction form
    21,867.93/30,175.02 = 12,306.63/x
  3. Step 3: Cross multiply
    21,867.93x = 30,175.02 × 12,306.63
  4. Step 4: Simplify right side
    21,867.93x = 371,352,806.38
  5. Step 5: Solve for x
    x = 371,352,806.38/21,867.93
  6. Step 6: Final answer
    x = 16,981.62

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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.