Home / 39,235.35-54,144.14-21,330.80

Finding the Fourth Proportional to 39,235.35, 54,144.14 and 21,330.80

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Solution

The fourth proportional to 39,235.35, 54,144.14 and 21,330.80 is: 29,436.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,235.35 : 54,144.14 = 21,330.80 : x
  2. Step 2: Convert to fraction form
    39,235.35/54,144.14 = 21,330.80/x
  3. Step 3: Cross multiply
    39,235.35x = 54,144.14 × 21,330.80
  4. Step 4: Simplify right side
    39,235.35x = 1,154,937,444.14
  5. Step 5: Solve for x
    x = 1,154,937,444.14/39,235.35
  6. Step 6: Final answer
    x = 29,436.14

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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.