Home / 15,319.33-21,149.09-9,270.70

Finding the Fourth Proportional to 15,319.33, 21,149.09 and 9,270.70

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Solution

The fourth proportional to 15,319.33, 21,149.09 and 9,270.70 is: 12,798.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,319.33 : 21,149.09 = 9,270.70 : x
  2. Step 2: Convert to fraction form
    15,319.33/21,149.09 = 9,270.70/x
  3. Step 3: Cross multiply
    15,319.33x = 21,149.09 × 9,270.70
  4. Step 4: Simplify right side
    15,319.33x = 196,066,868.66
  5. Step 5: Solve for x
    x = 196,066,868.66/15,319.33
  6. Step 6: Final answer
    x = 12,798.66

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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.