Home / 28,118.52-38,803.32-15,543.18

Finding the Fourth Proportional to 28,118.52, 38,803.32 and 15,543.18

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Solution

The fourth proportional to 28,118.52, 38,803.32 and 15,543.18 is: 21,449.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,118.52 : 38,803.32 = 15,543.18 : x
  2. Step 2: Convert to fraction form
    28,118.52/38,803.32 = 15,543.18/x
  3. Step 3: Cross multiply
    28,118.52x = 38,803.32 × 15,543.18
  4. Step 4: Simplify right side
    28,118.52x = 603,126,987.36
  5. Step 5: Solve for x
    x = 603,126,987.36/28,118.52
  6. Step 6: Final answer
    x = 21,449.46

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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.