Home / 21,850.56-30,154.38-12,897.24

Finding the Fourth Proportional to 21,850.56, 30,154.38 and 12,897.24

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Solution

The fourth proportional to 21,850.56, 30,154.38 and 12,897.24 is: 17,798.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,850.56 : 30,154.38 = 12,897.24 : x
  2. Step 2: Convert to fraction form
    21,850.56/30,154.38 = 12,897.24/x
  3. Step 3: Cross multiply
    21,850.56x = 30,154.38 × 12,897.24
  4. Step 4: Simplify right side
    21,850.56x = 388,908,275.91
  5. Step 5: Solve for x
    x = 388,908,275.91/21,850.56
  6. Step 6: Final answer
    x = 17,798.55

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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.