Home / 28,353.41-39,127.95-15,778.16

Finding the Fourth Proportional to 28,353.41, 39,127.95 and 15,778.16

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Solution

The fourth proportional to 28,353.41, 39,127.95 and 15,778.16 is: 21,773.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,353.41 : 39,127.95 = 15,778.16 : x
  2. Step 2: Convert to fraction form
    28,353.41/39,127.95 = 15,778.16/x
  3. Step 3: Cross multiply
    28,353.41x = 39,127.95 × 15,778.16
  4. Step 4: Simplify right side
    28,353.41x = 617,366,859.93
  5. Step 5: Solve for x
    x = 617,366,859.93/28,353.41
  6. Step 6: Final answer
    x = 21,773.99

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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.