Home / 18,355.36-25,330.40-9,971.84

Finding the Fourth Proportional to 18,355.36, 25,330.40 and 9,971.84

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Solution

The fourth proportional to 18,355.36, 25,330.40 and 9,971.84 is: 13,761.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,355.36 : 25,330.40 = 9,971.84 : x
  2. Step 2: Convert to fraction form
    18,355.36/25,330.40 = 9,971.84/x
  3. Step 3: Cross multiply
    18,355.36x = 25,330.40 × 9,971.84
  4. Step 4: Simplify right side
    18,355.36x = 252,590,695.94
  5. Step 5: Solve for x
    x = 252,590,695.94/18,355.36
  6. Step 6: Final answer
    x = 13,761.14

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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.