Home / 39,340.35-54,290.08-21,435.65

Finding the Fourth Proportional to 39,340.35, 54,290.08 and 21,435.65

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Solution

The fourth proportional to 39,340.35, 54,290.08 and 21,435.65 is: 29,581.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,340.35 : 54,290.08 = 21,435.65 : x
  2. Step 2: Convert to fraction form
    39,340.35/54,290.08 = 21,435.65/x
  3. Step 3: Cross multiply
    39,340.35x = 54,290.08 × 21,435.65
  4. Step 4: Simplify right side
    39,340.35x = 1,163,743,153.35
  5. Step 5: Solve for x
    x = 1,163,743,153.35/39,340.35
  6. Step 6: Final answer
    x = 29,581.41

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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.