Home / 19,661.66-27,139.02-13,377.68

Finding the Fourth Proportional to 19,661.66, 27,139.02 and 13,377.68

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Solution

The fourth proportional to 19,661.66, 27,139.02 and 13,377.68 is: 18,465.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,661.66 : 27,139.02 = 13,377.68 : x
  2. Step 2: Convert to fraction form
    19,661.66/27,139.02 = 13,377.68/x
  3. Step 3: Cross multiply
    19,661.66x = 27,139.02 × 13,377.68
  4. Step 4: Simplify right side
    19,661.66x = 363,057,125.07
  5. Step 5: Solve for x
    x = 363,057,125.07/19,661.66
  6. Step 6: Final answer
    x = 18,465.23

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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.