Home / 20,757.85-28,611.69-14,710.12

Finding the Fourth Proportional to 20,757.85, 28,611.69 and 14,710.12

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Solution

The fourth proportional to 20,757.85, 28,611.69 and 14,710.12 is: 20,275.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,757.85 : 28,611.69 = 14,710.12 : x
  2. Step 2: Convert to fraction form
    20,757.85/28,611.69 = 14,710.12/x
  3. Step 3: Cross multiply
    20,757.85x = 28,611.69 × 14,710.12
  4. Step 4: Simplify right side
    20,757.85x = 420,881,393.30
  5. Step 5: Solve for x
    x = 420,881,393.30/20,757.85
  6. Step 6: Final answer
    x = 20,275.77

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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.