Home / 28,119.34-38,803.62-15,543.28

Finding the Fourth Proportional to 28,119.34, 38,803.62 and 15,543.28

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Solution

The fourth proportional to 28,119.34, 38,803.62 and 15,543.28 is: 21,449.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,119.34 : 38,803.62 = 15,543.28 : x
  2. Step 2: Convert to fraction form
    28,119.34/38,803.62 = 15,543.28/x
  3. Step 3: Cross multiply
    28,119.34x = 38,803.62 × 15,543.28
  4. Step 4: Simplify right side
    28,119.34x = 603,135,530.67
  5. Step 5: Solve for x
    x = 603,135,530.67/28,119.34
  6. Step 6: Final answer
    x = 21,449.14

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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.