Home / 15,840.54-21,859.20-9,126.36

Finding the Fourth Proportional to 15,840.54, 21,859.20 and 9,126.36

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Solution

The fourth proportional to 15,840.54, 21,859.20 and 9,126.36 is: 12,593.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,840.54 : 21,859.20 = 9,126.36 : x
  2. Step 2: Convert to fraction form
    15,840.54/21,859.20 = 9,126.36/x
  3. Step 3: Cross multiply
    15,840.54x = 21,859.20 × 9,126.36
  4. Step 4: Simplify right side
    15,840.54x = 199,494,928.51
  5. Step 5: Solve for x
    x = 199,494,928.51/15,840.54
  6. Step 6: Final answer
    x = 12,593.95

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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.