Home / 21,210.05-31,793.21-9,531.47

Finding the Fourth Proportional to 21,210.05, 31,793.21 and 9,531.47

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Solution

The fourth proportional to 21,210.05, 31,793.21 and 9,531.47 is: 14,287.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,210.05 : 31,793.21 = 9,531.47 : x
  2. Step 2: Convert to fraction form
    21,210.05/31,793.21 = 9,531.47/x
  3. Step 3: Cross multiply
    21,210.05x = 31,793.21 × 9,531.47
  4. Step 4: Simplify right side
    21,210.05x = 303,035,820.70
  5. Step 5: Solve for x
    x = 303,035,820.70/21,210.05
  6. Step 6: Final answer
    x = 14,287.37

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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.