Home / 21,254.24-31,881.36-6,464

Finding the Fourth Proportional to 21,254.24, 31,881.36 and 6,464

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Solution

The fourth proportional to 21,254.24, 31,881.36 and 6,464 is: 9,696.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,254.24 : 31,881.36 = 6,464 : x
  2. Step 2: Convert to fraction form
    21,254.24/31,881.36 = 6,464/x
  3. Step 3: Cross multiply
    21,254.24x = 31,881.36 × 6,464
  4. Step 4: Simplify right side
    21,254.24x = 206,081,111.04
  5. Step 5: Solve for x
    x = 206,081,111.04/21,254.24
  6. Step 6: Final answer
    x = 9,696.00

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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.