Home / 31,421.16-43,358.62-18,498.38

Finding the Fourth Proportional to 31,421.16, 43,358.62 and 18,498.38

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Solution

The fourth proportional to 31,421.16, 43,358.62 and 18,498.38 is: 25,526.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,421.16 : 43,358.62 = 18,498.38 : x
  2. Step 2: Convert to fraction form
    31,421.16/43,358.62 = 18,498.38/x
  3. Step 3: Cross multiply
    31,421.16x = 43,358.62 × 18,498.38
  4. Step 4: Simplify right side
    31,421.16x = 802,064,229.04
  5. Step 5: Solve for x
    x = 802,064,229.04/31,421.16
  6. Step 6: Final answer
    x = 25,526.25

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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.