Home / 31,703.90-43,751.30-18,275.06

Finding the Fourth Proportional to 31,703.90, 43,751.30 and 18,275.06

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Solution

The fourth proportional to 31,703.90, 43,751.30 and 18,275.06 is: 25,219.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,703.90 : 43,751.30 = 18,275.06 : x
  2. Step 2: Convert to fraction form
    31,703.90/43,751.30 = 18,275.06/x
  3. Step 3: Cross multiply
    31,703.90x = 43,751.30 × 18,275.06
  4. Step 4: Simplify right side
    31,703.90x = 799,557,632.58
  5. Step 5: Solve for x
    x = 799,557,632.58/31,703.90
  6. Step 6: Final answer
    x = 25,219.54

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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.