Home / 12,777.18-19,168.20-4,459.57

Finding the Fourth Proportional to 12,777.18, 19,168.20 and 4,459.57

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Solution

The fourth proportional to 12,777.18, 19,168.20 and 4,459.57 is: 6,690.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,777.18 : 19,168.20 = 4,459.57 : x
  2. Step 2: Convert to fraction form
    12,777.18/19,168.20 = 4,459.57/x
  3. Step 3: Cross multiply
    12,777.18x = 19,168.20 × 4,459.57
  4. Step 4: Simplify right side
    12,777.18x = 85,481,946.40
  5. Step 5: Solve for x
    x = 85,481,946.40/12,777.18
  6. Step 6: Final answer
    x = 6,690.21

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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.