Home / 39,307.05-54,245.16-21,401.19

Finding the Fourth Proportional to 39,307.05, 54,245.16 and 21,401.19

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Solution

The fourth proportional to 39,307.05, 54,245.16 and 21,401.19 is: 29,534.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,307.05 : 54,245.16 = 21,401.19 : x
  2. Step 2: Convert to fraction form
    39,307.05/54,245.16 = 21,401.19/x
  3. Step 3: Cross multiply
    39,307.05x = 54,245.16 × 21,401.19
  4. Step 4: Simplify right side
    39,307.05x = 1,160,910,975.74
  5. Step 5: Solve for x
    x = 1,160,910,975.74/39,307.05
  6. Step 6: Final answer
    x = 29,534.42

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Double scale
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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.