Home / 31,521.74-47,280.98-8,147.58

Finding the Fourth Proportional to 31,521.74, 47,280.98 and 8,147.58

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Solution

The fourth proportional to 31,521.74, 47,280.98 and 8,147.58 is: 12,220.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,521.74 : 47,280.98 = 8,147.58 : x
  2. Step 2: Convert to fraction form
    31,521.74/47,280.98 = 8,147.58/x
  3. Step 3: Cross multiply
    31,521.74x = 47,280.98 × 8,147.58
  4. Step 4: Simplify right side
    31,521.74x = 385,225,567.03
  5. Step 5: Solve for x
    x = 385,225,567.03/31,521.74
  6. Step 6: Final answer
    x = 12,220.95

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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.