Home / 8,521.20-12,713.36-7,585.65

Finding the Fourth Proportional to 8,521.20, 12,713.36 and 7,585.65

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Solution

The fourth proportional to 8,521.20, 12,713.36 and 7,585.65 is: 11,317.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,521.20 : 12,713.36 = 7,585.65 : x
  2. Step 2: Convert to fraction form
    8,521.20/12,713.36 = 7,585.65/x
  3. Step 3: Cross multiply
    8,521.20x = 12,713.36 × 7,585.65
  4. Step 4: Simplify right side
    8,521.20x = 96,439,061.36
  5. Step 5: Solve for x
    x = 96,439,061.36/8,521.20
  6. Step 6: Final answer
    x = 11,317.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.