Home / 21,002.40-31,505.22-6,211.08

Finding the Fourth Proportional to 21,002.40, 31,505.22 and 6,211.08

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Solution

The fourth proportional to 21,002.40, 31,505.22 and 6,211.08 is: 9,317.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,002.40 : 31,505.22 = 6,211.08 : x
  2. Step 2: Convert to fraction form
    21,002.40/31,505.22 = 6,211.08/x
  3. Step 3: Cross multiply
    21,002.40x = 31,505.22 × 6,211.08
  4. Step 4: Simplify right side
    21,002.40x = 195,681,441.84
  5. Step 5: Solve for x
    x = 195,681,441.84/21,002.40
  6. Step 6: Final answer
    x = 9,317.10

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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.