Home / 20,018.16-27,599.40-13,719.60

Finding the Fourth Proportional to 20,018.16, 27,599.40 and 13,719.60

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Solution

The fourth proportional to 20,018.16, 27,599.40 and 13,719.60 is: 18,915.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,018.16 : 27,599.40 = 13,719.60 : x
  2. Step 2: Convert to fraction form
    20,018.16/27,599.40 = 13,719.60/x
  3. Step 3: Cross multiply
    20,018.16x = 27,599.40 × 13,719.60
  4. Step 4: Simplify right side
    20,018.16x = 378,652,728.24
  5. Step 5: Solve for x
    x = 378,652,728.24/20,018.16
  6. Step 6: Final answer
    x = 18,915.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.