Home / 21,164.40-29,205.72-11,734.32

Finding the Fourth Proportional to 21,164.40, 29,205.72 and 11,734.32

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Solution

The fourth proportional to 21,164.40, 29,205.72 and 11,734.32 is: 16,192.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,164.40 : 29,205.72 = 11,734.32 : x
  2. Step 2: Convert to fraction form
    21,164.40/29,205.72 = 11,734.32/x
  3. Step 3: Cross multiply
    21,164.40x = 29,205.72 × 11,734.32
  4. Step 4: Simplify right side
    21,164.40x = 342,709,264.31
  5. Step 5: Solve for x
    x = 342,709,264.31/21,164.40
  6. Step 6: Final answer
    x = 16,192.72

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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.