Home / 19,972.96-29,963.28-7,660

Finding the Fourth Proportional to 19,972.96, 29,963.28 and 7,660

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Solution

The fourth proportional to 19,972.96, 29,963.28 and 7,660 is: 11,491.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,972.96 : 29,963.28 = 7,660 : x
  2. Step 2: Convert to fraction form
    19,972.96/29,963.28 = 7,660/x
  3. Step 3: Cross multiply
    19,972.96x = 29,963.28 × 7,660
  4. Step 4: Simplify right side
    19,972.96x = 229,518,724.80
  5. Step 5: Solve for x
    x = 229,518,724.80/19,972.96
  6. Step 6: Final answer
    x = 11,491.47

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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.