Home / 23,099.88-31,856.58-15,139.20

Finding the Fourth Proportional to 23,099.88, 31,856.58 and 15,139.20

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Solution

The fourth proportional to 23,099.88, 31,856.58 and 15,139.20 is: 20,878.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,099.88 : 31,856.58 = 15,139.20 : x
  2. Step 2: Convert to fraction form
    23,099.88/31,856.58 = 15,139.20/x
  3. Step 3: Cross multiply
    23,099.88x = 31,856.58 × 15,139.20
  4. Step 4: Simplify right side
    23,099.88x = 482,283,135.94
  5. Step 5: Solve for x
    x = 482,283,135.94/23,099.88
  6. Step 6: Final answer
    x = 20,878.17

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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.