Home / 28,728.02-43,092.12-18,842.78

Finding the Fourth Proportional to 28,728.02, 43,092.12 and 18,842.78

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Solution

The fourth proportional to 28,728.02, 43,092.12 and 18,842.78 is: 28,264.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,728.02 : 43,092.12 = 18,842.78 : x
  2. Step 2: Convert to fraction form
    28,728.02/43,092.12 = 18,842.78/x
  3. Step 3: Cross multiply
    28,728.02x = 43,092.12 × 18,842.78
  4. Step 4: Simplify right side
    28,728.02x = 811,975,336.89
  5. Step 5: Solve for x
    x = 811,975,336.89/28,728.02
  6. Step 6: Final answer
    x = 28,264.23

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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.