Home / 18,458.20-27,665.70-9,688.60

Finding the Fourth Proportional to 18,458.20, 27,665.70 and 9,688.60

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Solution

The fourth proportional to 18,458.20, 27,665.70 and 9,688.60 is: 14,521.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,458.20 : 27,665.70 = 9,688.60 : x
  2. Step 2: Convert to fraction form
    18,458.20/27,665.70 = 9,688.60/x
  3. Step 3: Cross multiply
    18,458.20x = 27,665.70 × 9,688.60
  4. Step 4: Simplify right side
    18,458.20x = 268,041,901.02
  5. Step 5: Solve for x
    x = 268,041,901.02/18,458.20
  6. Step 6: Final answer
    x = 14,521.56

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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.