Home / 28,118.56-38,803.44-15,543.28

Finding the Fourth Proportional to 28,118.56, 38,803.44 and 15,543.28

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Solution

The fourth proportional to 28,118.56, 38,803.44 and 15,543.28 is: 21,449.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,118.56 : 38,803.44 = 15,543.28 : x
  2. Step 2: Convert to fraction form
    28,118.56/38,803.44 = 15,543.28/x
  3. Step 3: Cross multiply
    28,118.56x = 38,803.44 × 15,543.28
  4. Step 4: Simplify right side
    28,118.56x = 603,132,732.88
  5. Step 5: Solve for x
    x = 603,132,732.88/28,118.56
  6. Step 6: Final answer
    x = 21,449.63

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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.