Home / 18,280.48-27,424.80-7,187.20

Finding the Fourth Proportional to 18,280.48, 27,424.80 and 7,187.20

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Solution

The fourth proportional to 18,280.48, 27,424.80 and 7,187.20 is: 10,782.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,280.48 : 27,424.80 = 7,187.20 : x
  2. Step 2: Convert to fraction form
    18,280.48/27,424.80 = 7,187.20/x
  3. Step 3: Cross multiply
    18,280.48x = 27,424.80 × 7,187.20
  4. Step 4: Simplify right side
    18,280.48x = 197,107,522.56
  5. Step 5: Solve for x
    x = 197,107,522.56/18,280.48
  6. Step 6: Final answer
    x = 10,782.40

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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.