Home / 18,718.19-28,081.46-7,031.51

Finding the Fourth Proportional to 18,718.19, 28,081.46 and 7,031.51

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Solution

The fourth proportional to 18,718.19, 28,081.46 and 7,031.51 is: 10,548.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,718.19 : 28,081.46 = 7,031.51 : x
  2. Step 2: Convert to fraction form
    18,718.19/28,081.46 = 7,031.51/x
  3. Step 3: Cross multiply
    18,718.19x = 28,081.46 × 7,031.51
  4. Step 4: Simplify right side
    18,718.19x = 197,454,943.98
  5. Step 5: Solve for x
    x = 197,454,943.98/18,718.19
  6. Step 6: Final answer
    x = 10,548.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.