Home / 21,769.60-29,999.04-15,464.32

Finding the Fourth Proportional to 21,769.60, 29,999.04 and 15,464.32

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Solution

The fourth proportional to 21,769.60, 29,999.04 and 15,464.32 is: 21,310.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,769.60 : 29,999.04 = 15,464.32 : x
  2. Step 2: Convert to fraction form
    21,769.60/29,999.04 = 15,464.32/x
  3. Step 3: Cross multiply
    21,769.60x = 29,999.04 × 15,464.32
  4. Step 4: Simplify right side
    21,769.60x = 463,914,754.25
  5. Step 5: Solve for x
    x = 463,914,754.25/21,769.60
  6. Step 6: Final answer
    x = 21,310.21

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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.