Home / 23,178.11-31,985.78-12,567.74

Finding the Fourth Proportional to 23,178.11, 31,985.78 and 12,567.74

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Solution

The fourth proportional to 23,178.11, 31,985.78 and 12,567.74 is: 17,343.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,178.11 : 31,985.78 = 12,567.74 : x
  2. Step 2: Convert to fraction form
    23,178.11/31,985.78 = 12,567.74/x
  3. Step 3: Cross multiply
    23,178.11x = 31,985.78 × 12,567.74
  4. Step 4: Simplify right side
    23,178.11x = 401,988,743.97
  5. Step 5: Solve for x
    x = 401,988,743.97/23,178.11
  6. Step 6: Final answer
    x = 17,343.47

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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.