Home / 18,806.08-25,953.92-10,422.40

Finding the Fourth Proportional to 18,806.08, 25,953.92 and 10,422.40

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Solution

The fourth proportional to 18,806.08, 25,953.92 and 10,422.40 is: 14,383.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,806.08 : 25,953.92 = 10,422.40 : x
  2. Step 2: Convert to fraction form
    18,806.08/25,953.92 = 10,422.40/x
  3. Step 3: Cross multiply
    18,806.08x = 25,953.92 × 10,422.40
  4. Step 4: Simplify right side
    18,806.08x = 270,502,135.81
  5. Step 5: Solve for x
    x = 270,502,135.81/18,806.08
  6. Step 6: Final answer
    x = 14,383.76

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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.