Home / 19,663.68-27,135.84-10,711.20

Finding the Fourth Proportional to 19,663.68, 27,135.84 and 10,711.20

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Solution

The fourth proportional to 19,663.68, 27,135.84 and 10,711.20 is: 14,781.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,663.68 : 27,135.84 = 10,711.20 : x
  2. Step 2: Convert to fraction form
    19,663.68/27,135.84 = 10,711.20/x
  3. Step 3: Cross multiply
    19,663.68x = 27,135.84 × 10,711.20
  4. Step 4: Simplify right side
    19,663.68x = 290,657,409.41
  5. Step 5: Solve for x
    x = 290,657,409.41/19,663.68
  6. Step 6: Final answer
    x = 14,781.44

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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.