Home / 18,688.15-28,036.32-5,539.72

Finding the Fourth Proportional to 18,688.15, 28,036.32 and 5,539.72

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Solution

The fourth proportional to 18,688.15, 28,036.32 and 5,539.72 is: 8,310.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,688.15 : 28,036.32 = 5,539.72 : x
  2. Step 2: Convert to fraction form
    18,688.15/28,036.32 = 5,539.72/x
  3. Step 3: Cross multiply
    18,688.15x = 28,036.32 × 5,539.72
  4. Step 4: Simplify right side
    18,688.15x = 155,313,362.63
  5. Step 5: Solve for x
    x = 155,313,362.63/18,688.15
  6. Step 6: Final answer
    x = 8,310.79

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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.