Home / 18,521.04-27,792.36-11,139.60

Finding the Fourth Proportional to 18,521.04, 27,792.36 and 11,139.60

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Solution

The fourth proportional to 18,521.04, 27,792.36 and 11,139.60 is: 16,715.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,521.04 : 27,792.36 = 11,139.60 : x
  2. Step 2: Convert to fraction form
    18,521.04/27,792.36 = 11,139.60/x
  3. Step 3: Cross multiply
    18,521.04x = 27,792.36 × 11,139.60
  4. Step 4: Simplify right side
    18,521.04x = 309,595,773.46
  5. Step 5: Solve for x
    x = 309,595,773.46/18,521.04
  6. Step 6: Final answer
    x = 16,715.90

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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.