Home / 21,007.13-31,499.55-6,214.01

Finding the Fourth Proportional to 21,007.13, 31,499.55 and 6,214.01

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Solution

The fourth proportional to 21,007.13, 31,499.55 and 6,214.01 is: 9,317.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,007.13 : 31,499.55 = 6,214.01 : x
  2. Step 2: Convert to fraction form
    21,007.13/31,499.55 = 6,214.01/x
  3. Step 3: Cross multiply
    21,007.13x = 31,499.55 × 6,214.01
  4. Step 4: Simplify right side
    21,007.13x = 195,738,361.20
  5. Step 5: Solve for x
    x = 195,738,361.20/21,007.13
  6. Step 6: Final answer
    x = 9,317.71

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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.