Home / 15,323.58-21,139.30-13,109.24

Finding the Fourth Proportional to 15,323.58, 21,139.30 and 13,109.24

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Solution

The fourth proportional to 15,323.58, 21,139.30 and 13,109.24 is: 18,084.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,323.58 : 21,139.30 = 13,109.24 : x
  2. Step 2: Convert to fraction form
    15,323.58/21,139.30 = 13,109.24/x
  3. Step 3: Cross multiply
    15,323.58x = 21,139.30 × 13,109.24
  4. Step 4: Simplify right side
    15,323.58x = 277,120,177.21
  5. Step 5: Solve for x
    x = 277,120,177.21/15,323.58
  6. Step 6: Final answer
    x = 18,084.56

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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.