Home / 28,199.95-38,913.87-15,451.10

Finding the Fourth Proportional to 28,199.95, 38,913.87 and 15,451.10

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Solution

The fourth proportional to 28,199.95, 38,913.87 and 15,451.10 is: 21,321.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,199.95 : 38,913.87 = 15,451.10 : x
  2. Step 2: Convert to fraction form
    28,199.95/38,913.87 = 15,451.10/x
  3. Step 3: Cross multiply
    28,199.95x = 38,913.87 × 15,451.10
  4. Step 4: Simplify right side
    28,199.95x = 601,262,238.03
  5. Step 5: Solve for x
    x = 601,262,238.03/28,199.95
  6. Step 6: Final answer
    x = 21,321.40

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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.