Home / 21,302.10-31,929.15-10,214.10

Finding the Fourth Proportional to 21,302.10, 31,929.15 and 10,214.10

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Solution

The fourth proportional to 21,302.10, 31,929.15 and 10,214.10 is: 15,309.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,302.10 : 31,929.15 = 10,214.10 : x
  2. Step 2: Convert to fraction form
    21,302.10/31,929.15 = 10,214.10/x
  3. Step 3: Cross multiply
    21,302.10x = 31,929.15 × 10,214.10
  4. Step 4: Simplify right side
    21,302.10x = 326,127,531.02
  5. Step 5: Solve for x
    x = 326,127,531.02/21,302.10
  6. Step 6: Final answer
    x = 15,309.64

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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.