Home / 20,824.96-31,210.62-7,661.74

Finding the Fourth Proportional to 20,824.96, 31,210.62 and 7,661.74

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Solution

The fourth proportional to 20,824.96, 31,210.62 and 7,661.74 is: 11,482.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,824.96 : 31,210.62 = 7,661.74 : x
  2. Step 2: Convert to fraction form
    20,824.96/31,210.62 = 7,661.74/x
  3. Step 3: Cross multiply
    20,824.96x = 31,210.62 × 7,661.74
  4. Step 4: Simplify right side
    20,824.96x = 239,127,655.68
  5. Step 5: Solve for x
    x = 239,127,655.68/20,824.96
  6. Step 6: Final answer
    x = 11,482.74

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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.