Home / 15,480.12-21,362.00-8,406.39

Finding the Fourth Proportional to 15,480.12, 21,362.00 and 8,406.39

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Solution

The fourth proportional to 15,480.12, 21,362.00 and 8,406.39 is: 11,600.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,480.12 : 21,362.00 = 8,406.39 : x
  2. Step 2: Convert to fraction form
    15,480.12/21,362.00 = 8,406.39/x
  3. Step 3: Cross multiply
    15,480.12x = 21,362.00 × 8,406.39
  4. Step 4: Simplify right side
    15,480.12x = 179,577,261.15
  5. Step 5: Solve for x
    x = 179,577,261.15/15,480.12
  6. Step 6: Final answer
    x = 11,600.51

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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.