Home / 39,423.52-54,404.08-21,518.64

Finding the Fourth Proportional to 39,423.52, 54,404.08 and 21,518.64

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Solution

The fourth proportional to 39,423.52, 54,404.08 and 21,518.64 is: 29,695.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,423.52 : 54,404.08 = 21,518.64 : x
  2. Step 2: Convert to fraction form
    39,423.52/54,404.08 = 21,518.64/x
  3. Step 3: Cross multiply
    39,423.52x = 54,404.08 × 21,518.64
  4. Step 4: Simplify right side
    39,423.52x = 1,170,701,812.05
  5. Step 5: Solve for x
    x = 1,170,701,812.05/39,423.52
  6. Step 6: Final answer
    x = 29,695.52

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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.