Home / 31,779.93-43,860.20-18,351.16

Finding the Fourth Proportional to 31,779.93, 43,860.20 and 18,351.16

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Solution

The fourth proportional to 31,779.93, 43,860.20 and 18,351.16 is: 25,326.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,779.93 : 43,860.20 = 18,351.16 : x
  2. Step 2: Convert to fraction form
    31,779.93/43,860.20 = 18,351.16/x
  3. Step 3: Cross multiply
    31,779.93x = 43,860.20 × 18,351.16
  4. Step 4: Simplify right side
    31,779.93x = 804,885,547.83
  5. Step 5: Solve for x
    x = 804,885,547.83/31,779.93
  6. Step 6: Final answer
    x = 25,326.85

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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.