Home / 31,685.81-47,511.66-12,700.92

Finding the Fourth Proportional to 31,685.81, 47,511.66 and 12,700.92

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Solution

The fourth proportional to 31,685.81, 47,511.66 and 12,700.92 is: 19,044.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,685.81 : 47,511.66 = 12,700.92 : x
  2. Step 2: Convert to fraction form
    31,685.81/47,511.66 = 12,700.92/x
  3. Step 3: Cross multiply
    31,685.81x = 47,511.66 × 12,700.92
  4. Step 4: Simplify right side
    31,685.81x = 603,441,792.73
  5. Step 5: Solve for x
    x = 603,441,792.73/31,685.81
  6. Step 6: Final answer
    x = 19,044.55

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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.