Home / 39,207.80-54,107.10-21,302.84

Finding the Fourth Proportional to 39,207.80, 54,107.10 and 21,302.84

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Solution

The fourth proportional to 39,207.80, 54,107.10 and 21,302.84 is: 29,398.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,207.80 : 54,107.10 = 21,302.84 : x
  2. Step 2: Convert to fraction form
    39,207.80/54,107.10 = 21,302.84/x
  3. Step 3: Cross multiply
    39,207.80x = 54,107.10 × 21,302.84
  4. Step 4: Simplify right side
    39,207.80x = 1,152,634,894.16
  5. Step 5: Solve for x
    x = 1,152,634,894.16/39,207.80
  6. Step 6: Final answer
    x = 29,398.10

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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.