Home / 18,904.80-28,328.40-15,967.20

Finding the Fourth Proportional to 18,904.80, 28,328.40 and 15,967.20

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Solution

The fourth proportional to 18,904.80, 28,328.40 and 15,967.20 is: 23,926.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,904.80 : 28,328.40 = 15,967.20 : x
  2. Step 2: Convert to fraction form
    18,904.80/28,328.40 = 15,967.20/x
  3. Step 3: Cross multiply
    18,904.80x = 28,328.40 × 15,967.20
  4. Step 4: Simplify right side
    18,904.80x = 452,325,228.48
  5. Step 5: Solve for x
    x = 452,325,228.48/18,904.80
  6. Step 6: Final answer
    x = 23,926.48

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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.