Home / 21,340.64-31,985.04-15,102.48

Finding the Fourth Proportional to 21,340.64, 31,985.04 and 15,102.48

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Solution

The fourth proportional to 21,340.64, 31,985.04 and 15,102.48 is: 22,635.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,340.64 : 31,985.04 = 15,102.48 : x
  2. Step 2: Convert to fraction form
    21,340.64/31,985.04 = 15,102.48/x
  3. Step 3: Cross multiply
    21,340.64x = 31,985.04 × 15,102.48
  4. Step 4: Simplify right side
    21,340.64x = 483,053,603.48
  5. Step 5: Solve for x
    x = 483,053,603.48/21,340.64
  6. Step 6: Final answer
    x = 22,635.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.