Home / 22,971.06-31,670.64-15,405.30

Finding the Fourth Proportional to 22,971.06, 31,670.64 and 15,405.30

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Solution

The fourth proportional to 22,971.06, 31,670.64 and 15,405.30 is: 21,239.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,971.06 : 31,670.64 = 15,405.30 : x
  2. Step 2: Convert to fraction form
    22,971.06/31,670.64 = 15,405.30/x
  3. Step 3: Cross multiply
    22,971.06x = 31,670.64 × 15,405.30
  4. Step 4: Simplify right side
    22,971.06x = 487,895,710.39
  5. Step 5: Solve for x
    x = 487,895,710.39/22,971.06
  6. Step 6: Final answer
    x = 21,239.58

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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.