Home / 15,724.11-21,708.23-10,426.09

Finding the Fourth Proportional to 15,724.11, 21,708.23 and 10,426.09

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Solution

The fourth proportional to 15,724.11, 21,708.23 and 10,426.09 is: 14,393.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,724.11 : 21,708.23 = 10,426.09 : x
  2. Step 2: Convert to fraction form
    15,724.11/21,708.23 = 10,426.09/x
  3. Step 3: Cross multiply
    15,724.11x = 21,708.23 × 10,426.09
  4. Step 4: Simplify right side
    15,724.11x = 226,331,959.72
  5. Step 5: Solve for x
    x = 226,331,959.72/15,724.11
  6. Step 6: Final answer
    x = 14,393.94

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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.