Home / 28,447.65-39,259.62-20,897.24

Finding the Fourth Proportional to 28,447.65, 39,259.62 and 20,897.24

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Solution

The fourth proportional to 28,447.65, 39,259.62 and 20,897.24 is: 28,839.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,447.65 : 39,259.62 = 20,897.24 : x
  2. Step 2: Convert to fraction form
    28,447.65/39,259.62 = 20,897.24/x
  3. Step 3: Cross multiply
    28,447.65x = 39,259.62 × 20,897.24
  4. Step 4: Simplify right side
    28,447.65x = 820,417,505.15
  5. Step 5: Solve for x
    x = 820,417,505.15/28,447.65
  6. Step 6: Final answer
    x = 28,839.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.