Home / 39,072.79-53,920.35-21,168.24

Finding the Fourth Proportional to 39,072.79, 53,920.35 and 21,168.24

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Solution

The fourth proportional to 39,072.79, 53,920.35 and 21,168.24 is: 29,212.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,072.79 : 53,920.35 = 21,168.24 : x
  2. Step 2: Convert to fraction form
    39,072.79/53,920.35 = 21,168.24/x
  3. Step 3: Cross multiply
    39,072.79x = 53,920.35 × 21,168.24
  4. Step 4: Simplify right side
    39,072.79x = 1,141,398,909.68
  5. Step 5: Solve for x
    x = 1,141,398,909.68/39,072.79
  6. Step 6: Final answer
    x = 29,212.12

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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.