Home / 20,677.85-28,541.93-11,731.30

Finding the Fourth Proportional to 20,677.85, 28,541.93 and 11,731.30

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Solution

The fourth proportional to 20,677.85, 28,541.93 and 11,731.30 is: 16,192.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,677.85 : 28,541.93 = 11,731.30 : x
  2. Step 2: Convert to fraction form
    20,677.85/28,541.93 = 11,731.30/x
  3. Step 3: Cross multiply
    20,677.85x = 28,541.93 × 11,731.30
  4. Step 4: Simplify right side
    20,677.85x = 334,833,813.40
  5. Step 5: Solve for x
    x = 334,833,813.40/20,677.85
  6. Step 6: Final answer
    x = 16,192.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.