Home / 39,110.19-53,971.56-21,205.14

Finding the Fourth Proportional to 39,110.19, 53,971.56 and 21,205.14

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Solution

The fourth proportional to 39,110.19, 53,971.56 and 21,205.14 is: 29,262.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,110.19 : 53,971.56 = 21,205.14 : x
  2. Step 2: Convert to fraction form
    39,110.19/53,971.56 = 21,205.14/x
  3. Step 3: Cross multiply
    39,110.19x = 53,971.56 × 21,205.14
  4. Step 4: Simplify right side
    39,110.19x = 1,144,474,485.82
  5. Step 5: Solve for x
    x = 1,144,474,485.82/39,110.19
  6. Step 6: Final answer
    x = 29,262.82

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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.