Home / 19,657.20-27,161.48-15,710.88

Finding the Fourth Proportional to 19,657.20, 27,161.48 and 15,710.88

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Solution

The fourth proportional to 19,657.20, 27,161.48 and 15,710.88 is: 21,708.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,657.20 : 27,161.48 = 15,710.88 : x
  2. Step 2: Convert to fraction form
    19,657.20/27,161.48 = 15,710.88/x
  3. Step 3: Cross multiply
    19,657.20x = 27,161.48 × 15,710.88
  4. Step 4: Simplify right side
    19,657.20x = 426,730,752.90
  5. Step 5: Solve for x
    x = 426,730,752.90/19,657.20
  6. Step 6: Final answer
    x = 21,708.62

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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.