Home / 21,258.90-29,377.74-15,944.49

Finding the Fourth Proportional to 21,258.90, 29,377.74 and 15,944.49

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Solution

The fourth proportional to 21,258.90, 29,377.74 and 15,944.49 is: 22,033.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,258.90 : 29,377.74 = 15,944.49 : x
  2. Step 2: Convert to fraction form
    21,258.90/29,377.74 = 15,944.49/x
  3. Step 3: Cross multiply
    21,258.90x = 29,377.74 × 15,944.49
  4. Step 4: Simplify right side
    21,258.90x = 468,412,968.35
  5. Step 5: Solve for x
    x = 468,412,968.35/21,258.90
  6. Step 6: Final answer
    x = 22,033.74

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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.