Home / 20,706.16-28,568.28-18,710.32

Finding the Fourth Proportional to 20,706.16, 28,568.28 and 18,710.32

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Solution

The fourth proportional to 20,706.16, 28,568.28 and 18,710.32 is: 25,814.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,706.16 : 28,568.28 = 18,710.32 : x
  2. Step 2: Convert to fraction form
    20,706.16/28,568.28 = 18,710.32/x
  3. Step 3: Cross multiply
    20,706.16x = 28,568.28 × 18,710.32
  4. Step 4: Simplify right side
    20,706.16x = 534,521,660.65
  5. Step 5: Solve for x
    x = 534,521,660.65/20,706.16
  6. Step 6: Final answer
    x = 25,814.62

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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.