Home / 21,783.11-32,671.57-6,990.11

Finding the Fourth Proportional to 21,783.11, 32,671.57 and 6,990.11

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Solution

The fourth proportional to 21,783.11, 32,671.57 and 6,990.11 is: 10,484.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,783.11 : 32,671.57 = 6,990.11 : x
  2. Step 2: Convert to fraction form
    21,783.11/32,671.57 = 6,990.11/x
  3. Step 3: Cross multiply
    21,783.11x = 32,671.57 × 6,990.11
  4. Step 4: Simplify right side
    21,783.11x = 228,377,967.33
  5. Step 5: Solve for x
    x = 228,377,967.33/21,783.11
  6. Step 6: Final answer
    x = 10,484.18

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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.