Home / 22,780.13-31,437.33-13,219.30

Finding the Fourth Proportional to 22,780.13, 31,437.33 and 13,219.30

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Solution

The fourth proportional to 22,780.13, 31,437.33 and 13,219.30 is: 18,243.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,780.13 : 31,437.33 = 13,219.30 : x
  2. Step 2: Convert to fraction form
    22,780.13/31,437.33 = 13,219.30/x
  3. Step 3: Cross multiply
    22,780.13x = 31,437.33 × 13,219.30
  4. Step 4: Simplify right side
    22,780.13x = 415,579,339.28
  5. Step 5: Solve for x
    x = 415,579,339.28/22,780.13
  6. Step 6: Final answer
    x = 18,243.06

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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.