Home / 21,948.77-30,287.01-12,387.84

Finding the Fourth Proportional to 21,948.77, 30,287.01 and 12,387.84

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Solution

The fourth proportional to 21,948.77, 30,287.01 and 12,387.84 is: 17,093.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,948.77 : 30,287.01 = 12,387.84 : x
  2. Step 2: Convert to fraction form
    21,948.77/30,287.01 = 12,387.84/x
  3. Step 3: Cross multiply
    21,948.77x = 30,287.01 × 12,387.84
  4. Step 4: Simplify right side
    21,948.77x = 375,190,566.84
  5. Step 5: Solve for x
    x = 375,190,566.84/21,948.77
  6. Step 6: Final answer
    x = 17,093.92

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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.