Home / 28,099.28-38,775.80-15,523.76

Finding the Fourth Proportional to 28,099.28, 38,775.80 and 15,523.76

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Solution

The fourth proportional to 28,099.28, 38,775.80 and 15,523.76 is: 21,422.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,099.28 : 38,775.80 = 15,523.76 : x
  2. Step 2: Convert to fraction form
    28,099.28/38,775.80 = 15,523.76/x
  3. Step 3: Cross multiply
    28,099.28x = 38,775.80 × 15,523.76
  4. Step 4: Simplify right side
    28,099.28x = 601,946,213.01
  5. Step 5: Solve for x
    x = 601,946,213.01/28,099.28
  6. Step 6: Final answer
    x = 21,422.12

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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.