Home / 27,996.70-38,635.10-15,421.18

Finding the Fourth Proportional to 27,996.70, 38,635.10 and 15,421.18

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Solution

The fourth proportional to 27,996.70, 38,635.10 and 15,421.18 is: 21,281.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,996.70 : 38,635.10 = 15,421.18 : x
  2. Step 2: Convert to fraction form
    27,996.70/38,635.10 = 15,421.18/x
  3. Step 3: Cross multiply
    27,996.70x = 38,635.10 × 15,421.18
  4. Step 4: Simplify right side
    27,996.70x = 595,798,831.42
  5. Step 5: Solve for x
    x = 595,798,831.42/27,996.70
  6. Step 6: Final answer
    x = 21,281.04

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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.