Home / 21,928.50-30,266.19-15,132.06

Finding the Fourth Proportional to 21,928.50, 30,266.19 and 15,132.06

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Solution

The fourth proportional to 21,928.50, 30,266.19 and 15,132.06 is: 20,885.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,928.50 : 30,266.19 = 15,132.06 : x
  2. Step 2: Convert to fraction form
    21,928.50/30,266.19 = 15,132.06/x
  3. Step 3: Cross multiply
    21,928.50x = 30,266.19 × 15,132.06
  4. Step 4: Simplify right side
    21,928.50x = 457,989,803.05
  5. Step 5: Solve for x
    x = 457,989,803.05/21,928.50
  6. Step 6: Final answer
    x = 20,885.60

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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.