Home / 18,478.18-27,730.63-7,387.96

Finding the Fourth Proportional to 18,478.18, 27,730.63 and 7,387.96

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Solution

The fourth proportional to 18,478.18, 27,730.63 and 7,387.96 is: 11,087.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,478.18 : 27,730.63 = 7,387.96 : x
  2. Step 2: Convert to fraction form
    18,478.18/27,730.63 = 7,387.96/x
  3. Step 3: Cross multiply
    18,478.18x = 27,730.63 × 7,387.96
  4. Step 4: Simplify right side
    18,478.18x = 204,872,756.34
  5. Step 5: Solve for x
    x = 204,872,756.34/18,478.18
  6. Step 6: Final answer
    x = 11,087.28

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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.