Home / 15,320.84-21,143.30-8,606.21

Finding the Fourth Proportional to 15,320.84, 21,143.30 and 8,606.21

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Solution

The fourth proportional to 15,320.84, 21,143.30 and 8,606.21 is: 11,876.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,320.84 : 21,143.30 = 8,606.21 : x
  2. Step 2: Convert to fraction form
    15,320.84/21,143.30 = 8,606.21/x
  3. Step 3: Cross multiply
    15,320.84x = 21,143.30 × 8,606.21
  4. Step 4: Simplify right side
    15,320.84x = 181,963,531.15
  5. Step 5: Solve for x
    x = 181,963,531.15/15,320.84
  6. Step 6: Final answer
    x = 11,876.87

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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.