Home / 21,215.31-31,823.04-7,175.45

Finding the Fourth Proportional to 21,215.31, 31,823.04 and 7,175.45

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Solution

The fourth proportional to 21,215.31, 31,823.04 and 7,175.45 is: 10,763.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,215.31 : 31,823.04 = 7,175.45 : x
  2. Step 2: Convert to fraction form
    21,215.31/31,823.04 = 7,175.45/x
  3. Step 3: Cross multiply
    21,215.31x = 31,823.04 × 7,175.45
  4. Step 4: Simplify right side
    21,215.31x = 228,344,632.37
  5. Step 5: Solve for x
    x = 228,344,632.37/21,215.31
  6. Step 6: Final answer
    x = 10,763.20

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1.5x scale

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.