Home / 21,019.84-31,532.64-6,229.76

Finding the Fourth Proportional to 21,019.84, 31,532.64 and 6,229.76

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Solution

The fourth proportional to 21,019.84, 31,532.64 and 6,229.76 is: 9,345.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,019.84 : 31,532.64 = 6,229.76 : x
  2. Step 2: Convert to fraction form
    21,019.84/31,532.64 = 6,229.76/x
  3. Step 3: Cross multiply
    21,019.84x = 31,532.64 × 6,229.76
  4. Step 4: Simplify right side
    21,019.84x = 196,440,779.37
  5. Step 5: Solve for x
    x = 196,440,779.37/21,019.84
  6. Step 6: Final answer
    x = 9,345.49

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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.