Home / 15,400.13-21,252.91-8,685.60

Finding the Fourth Proportional to 15,400.13, 21,252.91 and 8,685.60

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Solution

The fourth proportional to 15,400.13, 21,252.91 and 8,685.60 is: 11,986.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,400.13 : 21,252.91 = 8,685.60 : x
  2. Step 2: Convert to fraction form
    15,400.13/21,252.91 = 8,685.60/x
  3. Step 3: Cross multiply
    15,400.13x = 21,252.91 × 8,685.60
  4. Step 4: Simplify right side
    15,400.13x = 184,594,265.33
  5. Step 5: Solve for x
    x = 184,594,265.33/15,400.13
  6. Step 6: Final answer
    x = 11,986.54

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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.