Home / 21,313.53-29,412.72-11,882.70

Finding the Fourth Proportional to 21,313.53, 29,412.72 and 11,882.70

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Solution

The fourth proportional to 21,313.53, 29,412.72 and 11,882.70 is: 16,398.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,313.53 : 29,412.72 = 11,882.70 : x
  2. Step 2: Convert to fraction form
    21,313.53/29,412.72 = 11,882.70/x
  3. Step 3: Cross multiply
    21,313.53x = 29,412.72 × 11,882.70
  4. Step 4: Simplify right side
    21,313.53x = 349,502,527.94
  5. Step 5: Solve for x
    x = 349,502,527.94/21,313.53
  6. Step 6: Final answer
    x = 16,398.15

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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.