Home / 17,860.71-26,791.28-12,312.57

Finding the Fourth Proportional to 17,860.71, 26,791.28 and 12,312.57

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Solution

The fourth proportional to 17,860.71, 26,791.28 and 12,312.57 is: 18,469.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,860.71 : 26,791.28 = 12,312.57 : x
  2. Step 2: Convert to fraction form
    17,860.71/26,791.28 = 12,312.57/x
  3. Step 3: Cross multiply
    17,860.71x = 26,791.28 × 12,312.57
  4. Step 4: Simplify right side
    17,860.71x = 329,869,510.39
  5. Step 5: Solve for x
    x = 329,869,510.39/17,860.71
  6. Step 6: Final answer
    x = 18,469.00

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1.5x scale

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.