Home / 19,620.20-29,430.30-15,861.80

Finding the Fourth Proportional to 19,620.20, 29,430.30 and 15,861.80

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Solution

The fourth proportional to 19,620.20, 29,430.30 and 15,861.80 is: 23,792.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,620.20 : 29,430.30 = 15,861.80 : x
  2. Step 2: Convert to fraction form
    19,620.20/29,430.30 = 15,861.80/x
  3. Step 3: Cross multiply
    19,620.20x = 29,430.30 × 15,861.80
  4. Step 4: Simplify right side
    19,620.20x = 466,817,532.54
  5. Step 5: Solve for x
    x = 466,817,532.54/19,620.20
  6. Step 6: Final answer
    x = 23,792.70

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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.