Home / 28,206.57-42,301.34-8,479.89

Finding the Fourth Proportional to 28,206.57, 42,301.34 and 8,479.89

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Solution

The fourth proportional to 28,206.57, 42,301.34 and 8,479.89 is: 12,717.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,206.57 : 42,301.34 = 8,479.89 : x
  2. Step 2: Convert to fraction form
    28,206.57/42,301.34 = 8,479.89/x
  3. Step 3: Cross multiply
    28,206.57x = 42,301.34 × 8,479.89
  4. Step 4: Simplify right side
    28,206.57x = 358,710,667.65
  5. Step 5: Solve for x
    x = 358,710,667.65/28,206.57
  6. Step 6: Final answer
    x = 12,717.27

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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.