Home / 28,384.46-39,170.56-15,809.21

Finding the Fourth Proportional to 28,384.46, 39,170.56 and 15,809.21

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Solution

The fourth proportional to 28,384.46, 39,170.56 and 15,809.21 is: 21,816.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,384.46 : 39,170.56 = 15,809.21 : x
  2. Step 2: Convert to fraction form
    28,384.46/39,170.56 = 15,809.21/x
  3. Step 3: Cross multiply
    28,384.46x = 39,170.56 × 15,809.21
  4. Step 4: Simplify right side
    28,384.46x = 619,255,608.86
  5. Step 5: Solve for x
    x = 619,255,608.86/28,384.46
  6. Step 6: Final answer
    x = 21,816.71

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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.