Home / 22,780.56-31,436.46-13,355.40

Finding the Fourth Proportional to 22,780.56, 31,436.46 and 13,355.40

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Solution

The fourth proportional to 22,780.56, 31,436.46 and 13,355.40 is: 18,430.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,780.56 : 31,436.46 = 13,355.40 : x
  2. Step 2: Convert to fraction form
    22,780.56/31,436.46 = 13,355.40/x
  3. Step 3: Cross multiply
    22,780.56x = 31,436.46 × 13,355.40
  4. Step 4: Simplify right side
    22,780.56x = 419,846,497.88
  5. Step 5: Solve for x
    x = 419,846,497.88/22,780.56
  6. Step 6: Final answer
    x = 18,430.03

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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.