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Finding the Fourth Proportional to 15,706.35, 21,652.35 and 11,228.49

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Solution

The fourth proportional to 15,706.35, 21,652.35 and 11,228.49 is: 15,479.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,706.35 : 21,652.35 = 11,228.49 : x
  2. Step 2: Convert to fraction form
    15,706.35/21,652.35 = 11,228.49/x
  3. Step 3: Cross multiply
    15,706.35x = 21,652.35 × 11,228.49
  4. Step 4: Simplify right side
    15,706.35x = 243,123,195.45
  5. Step 5: Solve for x
    x = 243,123,195.45/15,706.35
  6. Step 6: Final answer
    x = 15,479.29

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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.