Home / 21,158.27-31,740.14-7,112.24

Finding the Fourth Proportional to 21,158.27, 31,740.14 and 7,112.24

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Solution

The fourth proportional to 21,158.27, 31,740.14 and 7,112.24 is: 10,669.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,158.27 : 31,740.14 = 7,112.24 : x
  2. Step 2: Convert to fraction form
    21,158.27/31,740.14 = 7,112.24/x
  3. Step 3: Cross multiply
    21,158.27x = 31,740.14 × 7,112.24
  4. Step 4: Simplify right side
    21,158.27x = 225,743,457.75
  5. Step 5: Solve for x
    x = 225,743,457.75/21,158.27
  6. Step 6: Final answer
    x = 10,669.28

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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.