Home / 21,219.95-29,283.41-11,529.32

Finding the Fourth Proportional to 21,219.95, 29,283.41 and 11,529.32

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Solution

The fourth proportional to 21,219.95, 29,283.41 and 11,529.32 is: 15,910.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,219.95 : 29,283.41 = 11,529.32 : x
  2. Step 2: Convert to fraction form
    21,219.95/29,283.41 = 11,529.32/x
  3. Step 3: Cross multiply
    21,219.95x = 29,283.41 × 11,529.32
  4. Step 4: Simplify right side
    21,219.95x = 337,617,820.14
  5. Step 5: Solve for x
    x = 337,617,820.14/21,219.95
  6. Step 6: Final answer
    x = 15,910.40

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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.