Home / 28,365.98-39,149.80-16,436.56

Finding the Fourth Proportional to 28,365.98, 39,149.80 and 16,436.56

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Solution

The fourth proportional to 28,365.98, 39,149.80 and 16,436.56 is: 22,685.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,365.98 : 39,149.80 = 16,436.56 : x
  2. Step 2: Convert to fraction form
    28,365.98/39,149.80 = 16,436.56/x
  3. Step 3: Cross multiply
    28,365.98x = 39,149.80 × 16,436.56
  4. Step 4: Simplify right side
    28,365.98x = 643,488,036.69
  5. Step 5: Solve for x
    x = 643,488,036.69/28,365.98
  6. Step 6: Final answer
    x = 22,685.20

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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.