Home / 19,976.28-29,965.55-5,184.80

Finding the Fourth Proportional to 19,976.28, 29,965.55 and 5,184.80

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Solution

The fourth proportional to 19,976.28, 29,965.55 and 5,184.80 is: 7,777.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,976.28 : 29,965.55 = 5,184.80 : x
  2. Step 2: Convert to fraction form
    19,976.28/29,965.55 = 5,184.80/x
  3. Step 3: Cross multiply
    19,976.28x = 29,965.55 × 5,184.80
  4. Step 4: Simplify right side
    19,976.28x = 155,365,432.63
  5. Step 5: Solve for x
    x = 155,365,432.63/19,976.28
  6. Step 6: Final answer
    x = 7,777.50

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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.