Home / 39,459.59-54,453.55-21,554.13

Finding the Fourth Proportional to 39,459.59, 54,453.55 and 21,554.13

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Solution

The fourth proportional to 39,459.59, 54,453.55 and 21,554.13 is: 29,744.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,459.59 : 54,453.55 = 21,554.13 : x
  2. Step 2: Convert to fraction form
    39,459.59/54,453.55 = 21,554.13/x
  3. Step 3: Cross multiply
    39,459.59x = 54,453.55 × 21,554.13
  4. Step 4: Simplify right side
    39,459.59x = 1,173,699,086.39
  5. Step 5: Solve for x
    x = 1,173,699,086.39/39,459.59
  6. Step 6: Final answer
    x = 29,744.33

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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.