Home / 10,426.81-15,640.97-2,931.48

Finding the Fourth Proportional to 10,426.81, 15,640.97 and 2,931.48

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Solution

The fourth proportional to 10,426.81, 15,640.97 and 2,931.48 is: 4,397.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,426.81 : 15,640.97 = 2,931.48 : x
  2. Step 2: Convert to fraction form
    10,426.81/15,640.97 = 2,931.48/x
  3. Step 3: Cross multiply
    10,426.81x = 15,640.97 × 2,931.48
  4. Step 4: Simplify right side
    10,426.81x = 45,851,112.53
  5. Step 5: Solve for x
    x = 45,851,112.53/10,426.81
  6. Step 6: Final answer
    x = 4,397.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.