Home / 18,920.79-26,109.54-10,422.27

Finding the Fourth Proportional to 18,920.79, 26,109.54 and 10,422.27

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Solution

The fourth proportional to 18,920.79, 26,109.54 and 10,422.27 is: 14,382.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,920.79 : 26,109.54 = 10,422.27 : x
  2. Step 2: Convert to fraction form
    18,920.79/26,109.54 = 10,422.27/x
  3. Step 3: Cross multiply
    18,920.79x = 26,109.54 × 10,422.27
  4. Step 4: Simplify right side
    18,920.79x = 272,120,675.46
  5. Step 5: Solve for x
    x = 272,120,675.46/18,920.79
  6. Step 6: Final answer
    x = 14,382.10

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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.