Home / 28,384.41-39,170.48-15,809.16

Finding the Fourth Proportional to 28,384.41, 39,170.48 and 15,809.16

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Solution

The fourth proportional to 28,384.41, 39,170.48 and 15,809.16 is: 21,816.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,384.41 : 39,170.48 = 15,809.16 : x
  2. Step 2: Convert to fraction form
    28,384.41/39,170.48 = 15,809.16/x
  3. Step 3: Cross multiply
    28,384.41x = 39,170.48 × 15,809.16
  4. Step 4: Simplify right side
    28,384.41x = 619,252,306.55
  5. Step 5: Solve for x
    x = 619,252,306.55/28,384.41
  6. Step 6: Final answer
    x = 21,816.63

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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.