Home / 21,781.29-32,664.63-6,986.69

Finding the Fourth Proportional to 21,781.29, 32,664.63 and 6,986.69

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Solution

The fourth proportional to 21,781.29, 32,664.63 and 6,986.69 is: 10,477.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,781.29 : 32,664.63 = 6,986.69 : x
  2. Step 2: Convert to fraction form
    21,781.29/32,664.63 = 6,986.69/x
  3. Step 3: Cross multiply
    21,781.29x = 32,664.63 × 6,986.69
  4. Step 4: Simplify right side
    21,781.29x = 228,217,751.64
  5. Step 5: Solve for x
    x = 228,217,751.64/21,781.29
  6. Step 6: Final answer
    x = 10,477.70

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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.