Home / 21,957.28-30,301.03-11,885.80

Finding the Fourth Proportional to 21,957.28, 30,301.03 and 11,885.80

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Solution

The fourth proportional to 21,957.28, 30,301.03 and 11,885.80 is: 16,402.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,957.28 : 30,301.03 = 11,885.80 : x
  2. Step 2: Convert to fraction form
    21,957.28/30,301.03 = 11,885.80/x
  3. Step 3: Cross multiply
    21,957.28x = 30,301.03 × 11,885.80
  4. Step 4: Simplify right side
    21,957.28x = 360,151,978.29
  5. Step 5: Solve for x
    x = 360,151,978.29/21,957.28
  6. Step 6: Final answer
    x = 16,402.40

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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.