Home / 20,897.19-31,356.56-13,882.05

Finding the Fourth Proportional to 20,897.19, 31,356.56 and 13,882.05

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Solution

The fourth proportional to 20,897.19, 31,356.56 and 13,882.05 is: 20,830.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,897.19 : 31,356.56 = 13,882.05 : x
  2. Step 2: Convert to fraction form
    20,897.19/31,356.56 = 13,882.05/x
  3. Step 3: Cross multiply
    20,897.19x = 31,356.56 × 13,882.05
  4. Step 4: Simplify right side
    20,897.19x = 435,293,107.55
  5. Step 5: Solve for x
    x = 435,293,107.55/20,897.19
  6. Step 6: Final answer
    x = 20,830.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.