Home / 20,824.56-31,214.60-9,718.32

Finding the Fourth Proportional to 20,824.56, 31,214.60 and 9,718.32

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Solution

The fourth proportional to 20,824.56, 31,214.60 and 9,718.32 is: 14,567.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,824.56 : 31,214.60 = 9,718.32 : x
  2. Step 2: Convert to fraction form
    20,824.56/31,214.60 = 9,718.32/x
  3. Step 3: Cross multiply
    20,824.56x = 31,214.60 × 9,718.32
  4. Step 4: Simplify right side
    20,824.56x = 303,353,471.47
  5. Step 5: Solve for x
    x = 303,353,471.47/20,824.56
  6. Step 6: Final answer
    x = 14,567.10

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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.