Home / 15,542.40-21,448.32-8,643.36

Finding the Fourth Proportional to 15,542.40, 21,448.32 and 8,643.36

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Solution

The fourth proportional to 15,542.40, 21,448.32 and 8,643.36 is: 11,927.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,542.40 : 21,448.32 = 8,643.36 : x
  2. Step 2: Convert to fraction form
    15,542.40/21,448.32 = 8,643.36/x
  3. Step 3: Cross multiply
    15,542.40x = 21,448.32 × 8,643.36
  4. Step 4: Simplify right side
    15,542.40x = 185,385,551.16
  5. Step 5: Solve for x
    x = 185,385,551.16/15,542.40
  6. Step 6: Final answer
    x = 11,927.73

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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.