Home / 20,053.29-27,686.13-12,886.41

Finding the Fourth Proportional to 20,053.29, 27,686.13 and 12,886.41

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Solution

The fourth proportional to 20,053.29, 27,686.13 and 12,886.41 is: 17,791.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,053.29 : 27,686.13 = 12,886.41 : x
  2. Step 2: Convert to fraction form
    20,053.29/27,686.13 = 12,886.41/x
  3. Step 3: Cross multiply
    20,053.29x = 27,686.13 × 12,886.41
  4. Step 4: Simplify right side
    20,053.29x = 356,774,822.49
  5. Step 5: Solve for x
    x = 356,774,822.49/20,053.29
  6. Step 6: Final answer
    x = 17,791.34

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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.