Home / 21,547.05-29,734.41-11,986.92

Finding the Fourth Proportional to 21,547.05, 29,734.41 and 11,986.92

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Solution

The fourth proportional to 21,547.05, 29,734.41 and 11,986.92 is: 16,541.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,547.05 : 29,734.41 = 11,986.92 : x
  2. Step 2: Convert to fraction form
    21,547.05/29,734.41 = 11,986.92/x
  3. Step 3: Cross multiply
    21,547.05x = 29,734.41 × 11,986.92
  4. Step 4: Simplify right side
    21,547.05x = 356,423,993.92
  5. Step 5: Solve for x
    x = 356,423,993.92/21,547.05
  6. Step 6: Final answer
    x = 16,541.66

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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.