Home / 21,160.14-31,756.14-14,480.64

Finding the Fourth Proportional to 21,160.14, 31,756.14 and 14,480.64

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Solution

The fourth proportional to 21,160.14, 31,756.14 and 14,480.64 is: 21,731.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,160.14 : 31,756.14 = 14,480.64 : x
  2. Step 2: Convert to fraction form
    21,160.14/31,756.14 = 14,480.64/x
  3. Step 3: Cross multiply
    21,160.14x = 31,756.14 × 14,480.64
  4. Step 4: Simplify right side
    21,160.14x = 459,849,231.13
  5. Step 5: Solve for x
    x = 459,849,231.13/21,160.14
  6. Step 6: Final answer
    x = 21,731.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.