Home / 19,391.32-29,087.12-10,621.45

Finding the Fourth Proportional to 19,391.32, 29,087.12 and 10,621.45

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Solution

The fourth proportional to 19,391.32, 29,087.12 and 10,621.45 is: 15,932.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,391.32 : 29,087.12 = 10,621.45 : x
  2. Step 2: Convert to fraction form
    19,391.32/29,087.12 = 10,621.45/x
  3. Step 3: Cross multiply
    19,391.32x = 29,087.12 × 10,621.45
  4. Step 4: Simplify right side
    19,391.32x = 308,947,230.28
  5. Step 5: Solve for x
    x = 308,947,230.28/19,391.32
  6. Step 6: Final answer
    x = 15,932.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.