Home / 22,889.40-31,588.11-12,818.22

Finding the Fourth Proportional to 22,889.40, 31,588.11 and 12,818.22

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Solution

The fourth proportional to 22,889.40, 31,588.11 and 12,818.22 is: 17,689.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,889.40 : 31,588.11 = 12,818.22 : x
  2. Step 2: Convert to fraction form
    22,889.40/31,588.11 = 12,818.22/x
  3. Step 3: Cross multiply
    22,889.40x = 31,588.11 × 12,818.22
  4. Step 4: Simplify right side
    22,889.40x = 404,903,343.36
  5. Step 5: Solve for x
    x = 404,903,343.36/22,889.40
  6. Step 6: Final answer
    x = 17,689.56

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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.