Home / 21,533.32-29,725.10-20,188.18

Finding the Fourth Proportional to 21,533.32, 29,725.10 and 20,188.18

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Solution

The fourth proportional to 21,533.32, 29,725.10 and 20,188.18 is: 27,868.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,533.32 : 29,725.10 = 20,188.18 : x
  2. Step 2: Convert to fraction form
    21,533.32/29,725.10 = 20,188.18/x
  3. Step 3: Cross multiply
    21,533.32x = 29,725.10 × 20,188.18
  4. Step 4: Simplify right side
    21,533.32x = 600,095,669.32
  5. Step 5: Solve for x
    x = 600,095,669.32/21,533.32
  6. Step 6: Final answer
    x = 27,868.24

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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.