Home / 21,210.36-31,802.92-8,063.72

Finding the Fourth Proportional to 21,210.36, 31,802.92 and 8,063.72

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Solution

The fourth proportional to 21,210.36, 31,802.92 and 8,063.72 is: 12,090.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,210.36 : 31,802.92 = 8,063.72 : x
  2. Step 2: Convert to fraction form
    21,210.36/31,802.92 = 8,063.72/x
  3. Step 3: Cross multiply
    21,210.36x = 31,802.92 × 8,063.72
  4. Step 4: Simplify right side
    21,210.36x = 256,449,842.06
  5. Step 5: Solve for x
    x = 256,449,842.06/21,210.36
  6. Step 6: Final answer
    x = 12,090.78

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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.