Home / 23,109.66-31,881.04-13,672.76

Finding the Fourth Proportional to 23,109.66, 31,881.04 and 13,672.76

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Solution

The fourth proportional to 23,109.66, 31,881.04 and 13,672.76 is: 18,862.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,109.66 : 31,881.04 = 13,672.76 : x
  2. Step 2: Convert to fraction form
    23,109.66/31,881.04 = 13,672.76/x
  3. Step 3: Cross multiply
    23,109.66x = 31,881.04 × 13,672.76
  4. Step 4: Simplify right side
    23,109.66x = 435,901,808.47
  5. Step 5: Solve for x
    x = 435,901,808.47/23,109.66
  6. Step 6: Final answer
    x = 18,862.32

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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.