Home / 39,071.43-53,918.42-21,166.40

Finding the Fourth Proportional to 39,071.43, 53,918.42 and 21,166.40

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Solution

The fourth proportional to 39,071.43, 53,918.42 and 21,166.40 is: 29,209.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,071.43 : 53,918.42 = 21,166.40 : x
  2. Step 2: Convert to fraction form
    39,071.43/53,918.42 = 21,166.40/x
  3. Step 3: Cross multiply
    39,071.43x = 53,918.42 × 21,166.40
  4. Step 4: Simplify right side
    39,071.43x = 1,141,258,874.05
  5. Step 5: Solve for x
    x = 1,141,258,874.05/39,071.43
  6. Step 6: Final answer
    x = 29,209.55

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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.