Home / 10,521.44-15,785.04-3,125.76

Finding the Fourth Proportional to 10,521.44, 15,785.04 and 3,125.76

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Solution

The fourth proportional to 10,521.44, 15,785.04 and 3,125.76 is: 4,689.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,521.44 : 15,785.04 = 3,125.76 : x
  2. Step 2: Convert to fraction form
    10,521.44/15,785.04 = 3,125.76/x
  3. Step 3: Cross multiply
    10,521.44x = 15,785.04 × 3,125.76
  4. Step 4: Simplify right side
    10,521.44x = 49,340,246.63
  5. Step 5: Solve for x
    x = 49,340,246.63/10,521.44
  6. Step 6: Final answer
    x = 4,689.50

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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.