Home / 21,424.34-29,564.42-11,991.08

Finding the Fourth Proportional to 21,424.34, 29,564.42 and 11,991.08

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Solution

The fourth proportional to 21,424.34, 29,564.42 and 11,991.08 is: 16,547.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,424.34 : 29,564.42 = 11,991.08 : x
  2. Step 2: Convert to fraction form
    21,424.34/29,564.42 = 11,991.08/x
  3. Step 3: Cross multiply
    21,424.34x = 29,564.42 × 11,991.08
  4. Step 4: Simplify right side
    21,424.34x = 354,509,325.37
  5. Step 5: Solve for x
    x = 354,509,325.37/21,424.34
  6. Step 6: Final answer
    x = 16,547.04

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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.