Home / 39,071.16-53,917.38-21,165.48

Finding the Fourth Proportional to 39,071.16, 53,917.38 and 21,165.48

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Solution

The fourth proportional to 39,071.16, 53,917.38 and 21,165.48 is: 29,207.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,071.16 : 53,917.38 = 21,165.48 : x
  2. Step 2: Convert to fraction form
    39,071.16/53,917.38 = 21,165.48/x
  3. Step 3: Cross multiply
    39,071.16x = 53,917.38 × 21,165.48
  4. Step 4: Simplify right side
    39,071.16x = 1,141,187,228.04
  5. Step 5: Solve for x
    x = 1,141,187,228.04/39,071.16
  6. Step 6: Final answer
    x = 29,207.92

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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.