Home / 28,095.32-38,770.80-15,519.80

Finding the Fourth Proportional to 28,095.32, 38,770.80 and 15,519.80

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Solution

The fourth proportional to 28,095.32, 38,770.80 and 15,519.80 is: 21,416.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,095.32 : 38,770.80 = 15,519.80 : x
  2. Step 2: Convert to fraction form
    28,095.32/38,770.80 = 15,519.80/x
  3. Step 3: Cross multiply
    28,095.32x = 38,770.80 × 15,519.80
  4. Step 4: Simplify right side
    28,095.32x = 601,715,061.84
  5. Step 5: Solve for x
    x = 601,715,061.84/28,095.32
  6. Step 6: Final answer
    x = 21,416.91

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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.