Home / 18,805.13-25,952.90-10,421.63

Finding the Fourth Proportional to 18,805.13, 25,952.90 and 10,421.63

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Solution

The fourth proportional to 18,805.13, 25,952.90 and 10,421.63 is: 14,382.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,805.13 : 25,952.90 = 10,421.63 : x
  2. Step 2: Convert to fraction form
    18,805.13/25,952.90 = 10,421.63/x
  3. Step 3: Cross multiply
    18,805.13x = 25,952.90 × 10,421.63
  4. Step 4: Simplify right side
    18,805.13x = 270,471,521.23
  5. Step 5: Solve for x
    x = 270,471,521.23/18,805.13
  6. Step 6: Final answer
    x = 14,382.86

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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.