Home / 21,134.84-29,165.72-11,703.20

Finding the Fourth Proportional to 21,134.84, 29,165.72 and 11,703.20

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Solution

The fourth proportional to 21,134.84, 29,165.72 and 11,703.20 is: 16,150.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,134.84 : 29,165.72 = 11,703.20 : x
  2. Step 2: Convert to fraction form
    21,134.84/29,165.72 = 11,703.20/x
  3. Step 3: Cross multiply
    21,134.84x = 29,165.72 × 11,703.20
  4. Step 4: Simplify right side
    21,134.84x = 341,332,356.48
  5. Step 5: Solve for x
    x = 341,332,356.48/21,134.84
  6. Step 6: Final answer
    x = 16,150.22

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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.