Home / 21,066.48-31,599.72-9,231.84

Finding the Fourth Proportional to 21,066.48, 31,599.72 and 9,231.84

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Solution

The fourth proportional to 21,066.48, 31,599.72 and 9,231.84 is: 13,847.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,066.48 : 31,599.72 = 9,231.84 : x
  2. Step 2: Convert to fraction form
    21,066.48/31,599.72 = 9,231.84/x
  3. Step 3: Cross multiply
    21,066.48x = 31,599.72 × 9,231.84
  4. Step 4: Simplify right side
    21,066.48x = 291,723,559.08
  5. Step 5: Solve for x
    x = 291,723,559.08/21,066.48
  6. Step 6: Final answer
    x = 13,847.76

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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.