Home / 21,252.81-29,328.89-11,821.17

Finding the Fourth Proportional to 21,252.81, 29,328.89 and 11,821.17

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Solution

The fourth proportional to 21,252.81, 29,328.89 and 11,821.17 is: 16,313.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,252.81 : 29,328.89 = 11,821.17 : x
  2. Step 2: Convert to fraction form
    21,252.81/29,328.89 = 11,821.17/x
  3. Step 3: Cross multiply
    21,252.81x = 29,328.89 × 11,821.17
  4. Step 4: Simplify right side
    21,252.81x = 346,701,794.60
  5. Step 5: Solve for x
    x = 346,701,794.60/21,252.81
  6. Step 6: Final answer
    x = 16,313.22

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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.