Home / 31,521.24-47,280.24-8,147.07

Finding the Fourth Proportional to 31,521.24, 47,280.24 and 8,147.07

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Solution

The fourth proportional to 31,521.24, 47,280.24 and 8,147.07 is: 12,220.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,521.24 : 47,280.24 = 8,147.07 : x
  2. Step 2: Convert to fraction form
    31,521.24/47,280.24 = 8,147.07/x
  3. Step 3: Cross multiply
    31,521.24x = 47,280.24 × 8,147.07
  4. Step 4: Simplify right side
    31,521.24x = 385,195,424.90
  5. Step 5: Solve for x
    x = 385,195,424.90/31,521.24
  6. Step 6: Final answer
    x = 12,220.19

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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.