Home / 18,345.60-27,515.70-5,199.30

Finding the Fourth Proportional to 18,345.60, 27,515.70 and 5,199.30

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Solution

The fourth proportional to 18,345.60, 27,515.70 and 5,199.30 is: 7,798.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,345.60 : 27,515.70 = 5,199.30 : x
  2. Step 2: Convert to fraction form
    18,345.60/27,515.70 = 5,199.30/x
  3. Step 3: Cross multiply
    18,345.60x = 27,515.70 × 5,199.30
  4. Step 4: Simplify right side
    18,345.60x = 143,062,379.01
  5. Step 5: Solve for x
    x = 143,062,379.01/18,345.60
  6. Step 6: Final answer
    x = 7,798.18

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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.