Home / 31,341.16-43,226.66-21,780.93

Finding the Fourth Proportional to 31,341.16, 43,226.66 and 21,780.93

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Solution

The fourth proportional to 31,341.16, 43,226.66 and 21,780.93 is: 30,040.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,341.16 : 43,226.66 = 21,780.93 : x
  2. Step 2: Convert to fraction form
    31,341.16/43,226.66 = 21,780.93/x
  3. Step 3: Cross multiply
    31,341.16x = 43,226.66 × 21,780.93
  4. Step 4: Simplify right side
    31,341.16x = 941,517,072.15
  5. Step 5: Solve for x
    x = 941,517,072.15/31,341.16
  6. Step 6: Final answer
    x = 30,040.91

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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.