Home / 31,718.48-43,776.16-18,287.10

Finding the Fourth Proportional to 31,718.48, 43,776.16 and 18,287.10

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Solution

The fourth proportional to 31,718.48, 43,776.16 and 18,287.10 is: 25,238.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,718.48 : 43,776.16 = 18,287.10 : x
  2. Step 2: Convert to fraction form
    31,718.48/43,776.16 = 18,287.10/x
  3. Step 3: Cross multiply
    31,718.48x = 43,776.16 × 18,287.10
  4. Step 4: Simplify right side
    31,718.48x = 800,539,124.98
  5. Step 5: Solve for x
    x = 800,539,124.98/31,718.48
  6. Step 6: Final answer
    x = 25,238.89

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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.