Home / 39,423.23-54,402.05-21,518.09

Finding the Fourth Proportional to 39,423.23, 54,402.05 and 21,518.09

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Solution

The fourth proportional to 39,423.23, 54,402.05 and 21,518.09 is: 29,693.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,423.23 : 54,402.05 = 21,518.09 : x
  2. Step 2: Convert to fraction form
    39,423.23/54,402.05 = 21,518.09/x
  3. Step 3: Cross multiply
    39,423.23x = 54,402.05 × 21,518.09
  4. Step 4: Simplify right side
    39,423.23x = 1,170,627,989.87
  5. Step 5: Solve for x
    x = 1,170,627,989.87/39,423.23
  6. Step 6: Final answer
    x = 29,693.87

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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.