Home / 21,000.44-31,505.26-15,436.91

Finding the Fourth Proportional to 21,000.44, 31,505.26 and 15,436.91

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Solution

The fourth proportional to 21,000.44, 31,505.26 and 15,436.91 is: 23,158.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,000.44 : 31,505.26 = 15,436.91 : x
  2. Step 2: Convert to fraction form
    21,000.44/31,505.26 = 15,436.91/x
  3. Step 3: Cross multiply
    21,000.44x = 31,505.26 × 15,436.91
  4. Step 4: Simplify right side
    21,000.44x = 486,343,975.68
  5. Step 5: Solve for x
    x = 486,343,975.68/21,000.44
  6. Step 6: Final answer
    x = 23,158.76

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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.