Home / 31,861.76-47,751.76-13,154.95

Finding the Fourth Proportional to 31,861.76, 47,751.76 and 13,154.95

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Solution

The fourth proportional to 31,861.76, 47,751.76 and 13,154.95 is: 19,715.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,861.76 : 47,751.76 = 13,154.95 : x
  2. Step 2: Convert to fraction form
    31,861.76/47,751.76 = 13,154.95/x
  3. Step 3: Cross multiply
    31,861.76x = 47,751.76 × 13,154.95
  4. Step 4: Simplify right side
    31,861.76x = 628,171,710.68
  5. Step 5: Solve for x
    x = 628,171,710.68/31,861.76
  6. Step 6: Final answer
    x = 19,715.54

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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.