Home / 10,521.74-15,785.16-3,947.99

Finding the Fourth Proportional to 10,521.74, 15,785.16 and 3,947.99

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Solution

The fourth proportional to 10,521.74, 15,785.16 and 3,947.99 is: 5,922.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,521.74 : 15,785.16 = 3,947.99 : x
  2. Step 2: Convert to fraction form
    10,521.74/15,785.16 = 3,947.99/x
  3. Step 3: Cross multiply
    10,521.74x = 15,785.16 × 3,947.99
  4. Step 4: Simplify right side
    10,521.74x = 62,319,653.83
  5. Step 5: Solve for x
    x = 62,319,653.83/10,521.74
  6. Step 6: Final answer
    x = 5,922.94

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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.