Home / 38,519.40-53,153.74-21,291.04

Finding the Fourth Proportional to 38,519.40, 53,153.74 and 21,291.04

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Solution

The fourth proportional to 38,519.40, 53,153.74 and 21,291.04 is: 29,379.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,519.40 : 53,153.74 = 21,291.04 : x
  2. Step 2: Convert to fraction form
    38,519.40/53,153.74 = 21,291.04/x
  3. Step 3: Cross multiply
    38,519.40x = 53,153.74 × 21,291.04
  4. Step 4: Simplify right side
    38,519.40x = 1,131,698,218.38
  5. Step 5: Solve for x
    x = 1,131,698,218.38/38,519.40
  6. Step 6: Final answer
    x = 29,379.95

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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.