Home / 18,938.71-26,116.53-12,227.79

Finding the Fourth Proportional to 18,938.71, 26,116.53 and 12,227.79

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Solution

The fourth proportional to 18,938.71, 26,116.53 and 12,227.79 is: 16,862.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,938.71 : 26,116.53 = 12,227.79 : x
  2. Step 2: Convert to fraction form
    18,938.71/26,116.53 = 12,227.79/x
  3. Step 3: Cross multiply
    18,938.71x = 26,116.53 × 12,227.79
  4. Step 4: Simplify right side
    18,938.71x = 319,347,496.45
  5. Step 5: Solve for x
    x = 319,347,496.45/18,938.71
  6. Step 6: Final answer
    x = 16,862.16

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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.