Home / 13,985.73-20,972.45-7,410.42

Finding the Fourth Proportional to 13,985.73, 20,972.45 and 7,410.42

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Solution

The fourth proportional to 13,985.73, 20,972.45 and 7,410.42 is: 11,112.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,985.73 : 20,972.45 = 7,410.42 : x
  2. Step 2: Convert to fraction form
    13,985.73/20,972.45 = 7,410.42/x
  3. Step 3: Cross multiply
    13,985.73x = 20,972.45 × 7,410.42
  4. Step 4: Simplify right side
    13,985.73x = 155,414,681.46
  5. Step 5: Solve for x
    x = 155,414,681.46/13,985.73
  6. Step 6: Final answer
    x = 11,112.38

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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.