Home / 20,660.22-28,510.51-11,710.62

Finding the Fourth Proportional to 20,660.22, 28,510.51 and 11,710.62

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Solution

The fourth proportional to 20,660.22, 28,510.51 and 11,710.62 is: 16,160.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,660.22 : 28,510.51 = 11,710.62 : x
  2. Step 2: Convert to fraction form
    20,660.22/28,510.51 = 11,710.62/x
  3. Step 3: Cross multiply
    20,660.22x = 28,510.51 × 11,710.62
  4. Step 4: Simplify right side
    20,660.22x = 333,875,748.62
  5. Step 5: Solve for x
    x = 333,875,748.62/20,660.22
  6. Step 6: Final answer
    x = 16,160.32

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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.