Home / 28,184.10-42,245.64-18,330.45

Finding the Fourth Proportional to 28,184.10, 42,245.64 and 18,330.45

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Solution

The fourth proportional to 28,184.10, 42,245.64 and 18,330.45 is: 27,475.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,184.10 : 42,245.64 = 18,330.45 : x
  2. Step 2: Convert to fraction form
    28,184.10/42,245.64 = 18,330.45/x
  3. Step 3: Cross multiply
    28,184.10x = 42,245.64 × 18,330.45
  4. Step 4: Simplify right side
    28,184.10x = 774,381,591.74
  5. Step 5: Solve for x
    x = 774,381,591.74/28,184.10
  6. Step 6: Final answer
    x = 27,475.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.