Home / 20,716.04-28,588.10-11,284.66

Finding the Fourth Proportional to 20,716.04, 28,588.10 and 11,284.66

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Solution

The fourth proportional to 20,716.04, 28,588.10 and 11,284.66 is: 15,572.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,716.04 : 28,588.10 = 11,284.66 : x
  2. Step 2: Convert to fraction form
    20,716.04/28,588.10 = 11,284.66/x
  3. Step 3: Cross multiply
    20,716.04x = 28,588.10 × 11,284.66
  4. Step 4: Simplify right side
    20,716.04x = 322,606,988.55
  5. Step 5: Solve for x
    x = 322,606,988.55/20,716.04
  6. Step 6: Final answer
    x = 15,572.81

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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.