Home / 39,929.43-59,933.79-21,209.64

Finding the Fourth Proportional to 39,929.43, 59,933.79 and 21,209.64

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Solution

The fourth proportional to 39,929.43, 59,933.79 and 21,209.64 is: 31,835.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,929.43 : 59,933.79 = 21,209.64 : x
  2. Step 2: Convert to fraction form
    39,929.43/59,933.79 = 21,209.64/x
  3. Step 3: Cross multiply
    39,929.43x = 59,933.79 × 21,209.64
  4. Step 4: Simplify right side
    39,929.43x = 1,271,174,109.74
  5. Step 5: Solve for x
    x = 1,271,174,109.74/39,929.43
  6. Step 6: Final answer
    x = 31,835.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.