Home / 15,913.12-23,855.28-7,143.52

Finding the Fourth Proportional to 15,913.12, 23,855.28 and 7,143.52

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Solution

The fourth proportional to 15,913.12, 23,855.28 and 7,143.52 is: 10,708.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,913.12 : 23,855.28 = 7,143.52 : x
  2. Step 2: Convert to fraction form
    15,913.12/23,855.28 = 7,143.52/x
  3. Step 3: Cross multiply
    15,913.12x = 23,855.28 × 7,143.52
  4. Step 4: Simplify right side
    15,913.12x = 170,410,669.79
  5. Step 5: Solve for x
    x = 170,410,669.79/15,913.12
  6. Step 6: Final answer
    x = 10,708.82

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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.