Home / 12,155.03-18,218.99-5,132.94

Finding the Fourth Proportional to 12,155.03, 18,218.99 and 5,132.94

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Solution

The fourth proportional to 12,155.03, 18,218.99 and 5,132.94 is: 7,693.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,155.03 : 18,218.99 = 5,132.94 : x
  2. Step 2: Convert to fraction form
    12,155.03/18,218.99 = 5,132.94/x
  3. Step 3: Cross multiply
    12,155.03x = 18,218.99 × 5,132.94
  4. Step 4: Simplify right side
    12,155.03x = 93,516,927.04
  5. Step 5: Solve for x
    x = 93,516,927.04/12,155.03
  6. Step 6: Final answer
    x = 7,693.68

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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.