Home / 39,412.62-54,388.95-21,507.93

Finding the Fourth Proportional to 39,412.62, 54,388.95 and 21,507.93

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Solution

The fourth proportional to 39,412.62, 54,388.95 and 21,507.93 is: 29,680.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,412.62 : 54,388.95 = 21,507.93 : x
  2. Step 2: Convert to fraction form
    39,412.62/54,388.95 = 21,507.93/x
  3. Step 3: Cross multiply
    39,412.62x = 54,388.95 × 21,507.93
  4. Step 4: Simplify right side
    39,412.62x = 1,169,793,729.37
  5. Step 5: Solve for x
    x = 1,169,793,729.37/39,412.62
  6. Step 6: Final answer
    x = 29,680.69

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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.