Home / 19,918.60-29,912.10-11,030.20

Finding the Fourth Proportional to 19,918.60, 29,912.10 and 11,030.20

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Solution

The fourth proportional to 19,918.60, 29,912.10 and 11,030.20 is: 16,564.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,918.60 : 29,912.10 = 11,030.20 : x
  2. Step 2: Convert to fraction form
    19,918.60/29,912.10 = 11,030.20/x
  3. Step 3: Cross multiply
    19,918.60x = 29,912.10 × 11,030.20
  4. Step 4: Simplify right side
    19,918.60x = 329,936,445.42
  5. Step 5: Solve for x
    x = 329,936,445.42/19,918.60
  6. Step 6: Final answer
    x = 16,564.24

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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.