Home / 20,681.16-30,972.38-11,897.62

Finding the Fourth Proportional to 20,681.16, 30,972.38 and 11,897.62

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Solution

The fourth proportional to 20,681.16, 30,972.38 and 11,897.62 is: 17,818.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,681.16 : 30,972.38 = 11,897.62 : x
  2. Step 2: Convert to fraction form
    20,681.16/30,972.38 = 11,897.62/x
  3. Step 3: Cross multiply
    20,681.16x = 30,972.38 × 11,897.62
  4. Step 4: Simplify right side
    20,681.16x = 368,497,470.82
  5. Step 5: Solve for x
    x = 368,497,470.82/20,681.16
  6. Step 6: Final answer
    x = 17,818.03

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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.