Home / 31,421.81-43,362.39-17,274.75

Finding the Fourth Proportional to 31,421.81, 43,362.39 and 17,274.75

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Solution

The fourth proportional to 31,421.81, 43,362.39 and 17,274.75 is: 23,839.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,421.81 : 43,362.39 = 17,274.75 : x
  2. Step 2: Convert to fraction form
    31,421.81/43,362.39 = 17,274.75/x
  3. Step 3: Cross multiply
    31,421.81x = 43,362.39 × 17,274.75
  4. Step 4: Simplify right side
    31,421.81x = 749,074,446.65
  5. Step 5: Solve for x
    x = 749,074,446.65/31,421.81
  6. Step 6: Final answer
    x = 23,839.32

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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.