Home / 18,516.30-27,739.58-9,145.36

Finding the Fourth Proportional to 18,516.30, 27,739.58 and 9,145.36

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Solution

The fourth proportional to 18,516.30, 27,739.58 and 9,145.36 is: 13,700.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,516.30 : 27,739.58 = 9,145.36 : x
  2. Step 2: Convert to fraction form
    18,516.30/27,739.58 = 9,145.36/x
  3. Step 3: Cross multiply
    18,516.30x = 27,739.58 × 9,145.36
  4. Step 4: Simplify right side
    18,516.30x = 253,688,445.35
  5. Step 5: Solve for x
    x = 253,688,445.35/18,516.30
  6. Step 6: Final answer
    x = 13,700.82

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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.