Home / 12,287.10-18,435.31-7,360.28

Finding the Fourth Proportional to 12,287.10, 18,435.31 and 7,360.28

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Solution

The fourth proportional to 12,287.10, 18,435.31 and 7,360.28 is: 11,043.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,287.10 : 18,435.31 = 7,360.28 : x
  2. Step 2: Convert to fraction form
    12,287.10/18,435.31 = 7,360.28/x
  3. Step 3: Cross multiply
    12,287.10x = 18,435.31 × 7,360.28
  4. Step 4: Simplify right side
    12,287.10x = 135,688,932.91
  5. Step 5: Solve for x
    x = 135,688,932.91/12,287.10
  6. Step 6: Final answer
    x = 11,043.20

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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.