Home / 21,064.64-28,982.04-15,999.44

Finding the Fourth Proportional to 21,064.64, 28,982.04 and 15,999.44

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Solution

The fourth proportional to 21,064.64, 28,982.04 and 15,999.44 is: 22,013.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,064.64 : 28,982.04 = 15,999.44 : x
  2. Step 2: Convert to fraction form
    21,064.64/28,982.04 = 15,999.44/x
  3. Step 3: Cross multiply
    21,064.64x = 28,982.04 × 15,999.44
  4. Step 4: Simplify right side
    21,064.64x = 463,696,410.06
  5. Step 5: Solve for x
    x = 463,696,410.06/21,064.64
  6. Step 6: Final answer
    x = 22,013.02

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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.