Home / 20,681.99-28,542.62-11,730.27

Finding the Fourth Proportional to 20,681.99, 28,542.62 and 11,730.27

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Solution

The fourth proportional to 20,681.99, 28,542.62 and 11,730.27 is: 16,188.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,681.99 : 28,542.62 = 11,730.27 : x
  2. Step 2: Convert to fraction form
    20,681.99/28,542.62 = 11,730.27/x
  3. Step 3: Cross multiply
    20,681.99x = 28,542.62 × 11,730.27
  4. Step 4: Simplify right side
    20,681.99x = 334,812,580.46
  5. Step 5: Solve for x
    x = 334,812,580.46/20,681.99
  6. Step 6: Final answer
    x = 16,188.61

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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.