Home / 11,252.90-15,535.62-7,721.30

Finding the Fourth Proportional to 11,252.90, 15,535.62 and 7,721.30

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Solution

The fourth proportional to 11,252.90, 15,535.62 and 7,721.30 is: 10,659.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,252.90 : 15,535.62 = 7,721.30 : x
  2. Step 2: Convert to fraction form
    11,252.90/15,535.62 = 7,721.30/x
  3. Step 3: Cross multiply
    11,252.90x = 15,535.62 × 7,721.30
  4. Step 4: Simplify right side
    11,252.90x = 119,955,182.71
  5. Step 5: Solve for x
    x = 119,955,182.71/11,252.90
  6. Step 6: Final answer
    x = 10,659.94

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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.