Home / 19,398.48-29,110.49-10,639.55

Finding the Fourth Proportional to 19,398.48, 29,110.49 and 10,639.55

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Solution

The fourth proportional to 19,398.48, 29,110.49 and 10,639.55 is: 15,966.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,398.48 : 29,110.49 = 10,639.55 : x
  2. Step 2: Convert to fraction form
    19,398.48/29,110.49 = 10,639.55/x
  3. Step 3: Cross multiply
    19,398.48x = 29,110.49 × 10,639.55
  4. Step 4: Simplify right side
    19,398.48x = 309,722,315.13
  5. Step 5: Solve for x
    x = 309,722,315.13/19,398.48
  6. Step 6: Final answer
    x = 15,966.32

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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.