Home / 21,320.84-29,423.38-11,891.24

Finding the Fourth Proportional to 21,320.84, 29,423.38 and 11,891.24

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Solution

The fourth proportional to 21,320.84, 29,423.38 and 11,891.24 is: 16,410.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,320.84 : 29,423.38 = 11,891.24 : x
  2. Step 2: Convert to fraction form
    21,320.84/29,423.38 = 11,891.24/x
  3. Step 3: Cross multiply
    21,320.84x = 29,423.38 × 11,891.24
  4. Step 4: Simplify right side
    21,320.84x = 349,880,473.19
  5. Step 5: Solve for x
    x = 349,880,473.19/21,320.84
  6. Step 6: Final answer
    x = 16,410.26

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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.