Home / 28,160.16-38,861.13-15,584.91

Finding the Fourth Proportional to 28,160.16, 38,861.13 and 15,584.91

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Solution

The fourth proportional to 28,160.16, 38,861.13 and 15,584.91 is: 21,507.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,160.16 : 38,861.13 = 15,584.91 : x
  2. Step 2: Convert to fraction form
    28,160.16/38,861.13 = 15,584.91/x
  3. Step 3: Cross multiply
    28,160.16x = 38,861.13 × 15,584.91
  4. Step 4: Simplify right side
    28,160.16x = 605,647,060.51
  5. Step 5: Solve for x
    x = 605,647,060.51/28,160.16
  6. Step 6: Final answer
    x = 21,507.23

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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.