Home / 39,740.25-54,841.59-21,835.29

Finding the Fourth Proportional to 39,740.25, 54,841.59 and 21,835.29

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Solution

The fourth proportional to 39,740.25, 54,841.59 and 21,835.29 is: 30,132.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,740.25 : 54,841.59 = 21,835.29 : x
  2. Step 2: Convert to fraction form
    39,740.25/54,841.59 = 21,835.29/x
  3. Step 3: Cross multiply
    39,740.25x = 54,841.59 × 21,835.29
  4. Step 4: Simplify right side
    39,740.25x = 1,197,482,021.71
  5. Step 5: Solve for x
    x = 1,197,482,021.71/39,740.25
  6. Step 6: Final answer
    x = 30,132.72

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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.