Home / 28,518.45-39,355.71-15,770.97

Finding the Fourth Proportional to 28,518.45, 39,355.71 and 15,770.97

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Solution

The fourth proportional to 28,518.45, 39,355.71 and 15,770.97 is: 21,764.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,518.45 : 39,355.71 = 15,770.97 : x
  2. Step 2: Convert to fraction form
    28,518.45/39,355.71 = 15,770.97/x
  3. Step 3: Cross multiply
    28,518.45x = 39,355.71 × 15,770.97
  4. Step 4: Simplify right side
    28,518.45x = 620,677,721.74
  5. Step 5: Solve for x
    x = 620,677,721.74/28,518.45
  6. Step 6: Final answer
    x = 21,764.08

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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.