Home / 15,543.36-21,435.84-9,953.28

Finding the Fourth Proportional to 15,543.36, 21,435.84 and 9,953.28

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Solution

The fourth proportional to 15,543.36, 21,435.84 and 9,953.28 is: 13,726.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,543.36 : 21,435.84 = 9,953.28 : x
  2. Step 2: Convert to fraction form
    15,543.36/21,435.84 = 9,953.28/x
  3. Step 3: Cross multiply
    15,543.36x = 21,435.84 × 9,953.28
  4. Step 4: Simplify right side
    15,543.36x = 213,356,917.56
  5. Step 5: Solve for x
    x = 213,356,917.56/15,543.36
  6. Step 6: Final answer
    x = 13,726.56

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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.