Home / 19,909.23-29,862.81-7,428.27

Finding the Fourth Proportional to 19,909.23, 29,862.81 and 7,428.27

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Solution

The fourth proportional to 19,909.23, 29,862.81 and 7,428.27 is: 11,142.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,909.23 : 29,862.81 = 7,428.27 : x
  2. Step 2: Convert to fraction form
    19,909.23/29,862.81 = 7,428.27/x
  3. Step 3: Cross multiply
    19,909.23x = 29,862.81 × 7,428.27
  4. Step 4: Simplify right side
    19,909.23x = 221,829,127.62
  5. Step 5: Solve for x
    x = 221,829,127.62/19,909.23
  6. Step 6: Final answer
    x = 11,142.03

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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.