Home / 21,777.40-32,666.28-6,986.44

Finding the Fourth Proportional to 21,777.40, 32,666.28 and 6,986.44

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Solution

The fourth proportional to 21,777.40, 32,666.28 and 6,986.44 is: 10,479.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,777.40 : 32,666.28 = 6,986.44 : x
  2. Step 2: Convert to fraction form
    21,777.40/32,666.28 = 6,986.44/x
  3. Step 3: Cross multiply
    21,777.40x = 32,666.28 × 6,986.44
  4. Step 4: Simplify right side
    21,777.40x = 228,221,005.24
  5. Step 5: Solve for x
    x = 228,221,005.24/21,777.40
  6. Step 6: Final answer
    x = 10,479.72

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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.