Home / 31,345.16-43,257.22-17,918.20

Finding the Fourth Proportional to 31,345.16, 43,257.22 and 17,918.20

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Solution

The fourth proportional to 31,345.16, 43,257.22 and 17,918.20 is: 24,727.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,345.16 : 43,257.22 = 17,918.20 : x
  2. Step 2: Convert to fraction form
    31,345.16/43,257.22 = 17,918.20/x
  3. Step 3: Cross multiply
    31,345.16x = 43,257.22 × 17,918.20
  4. Step 4: Simplify right side
    31,345.16x = 775,091,507.81
  5. Step 5: Solve for x
    x = 775,091,507.81/31,345.16
  6. Step 6: Final answer
    x = 24,727.63

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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.