Home / 21,210.26-31,823.89-8,736.46

Finding the Fourth Proportional to 21,210.26, 31,823.89 and 8,736.46

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Solution

The fourth proportional to 21,210.26, 31,823.89 and 8,736.46 is: 13,108.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,210.26 : 31,823.89 = 8,736.46 : x
  2. Step 2: Convert to fraction form
    21,210.26/31,823.89 = 8,736.46/x
  3. Step 3: Cross multiply
    21,210.26x = 31,823.89 × 8,736.46
  4. Step 4: Simplify right side
    21,210.26x = 278,028,040.63
  5. Step 5: Solve for x
    x = 278,028,040.63/21,210.26
  6. Step 6: Final answer
    x = 13,108.19

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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.