Home / 19,061.20-28,534.20-16,987.60

Finding the Fourth Proportional to 19,061.20, 28,534.20 and 16,987.60

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Solution

The fourth proportional to 19,061.20, 28,534.20 and 16,987.60 is: 25,430.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,061.20 : 28,534.20 = 16,987.60 : x
  2. Step 2: Convert to fraction form
    19,061.20/28,534.20 = 16,987.60/x
  3. Step 3: Cross multiply
    19,061.20x = 28,534.20 × 16,987.60
  4. Step 4: Simplify right side
    19,061.20x = 484,727,575.92
  5. Step 5: Solve for x
    x = 484,727,575.92/19,061.20
  6. Step 6: Final answer
    x = 25,430.07

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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.