Home / 28,536.05-42,811.95-11,903.90

Finding the Fourth Proportional to 28,536.05, 42,811.95 and 11,903.90

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Solution

The fourth proportional to 28,536.05, 42,811.95 and 11,903.90 is: 17,859.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,536.05 : 42,811.95 = 11,903.90 : x
  2. Step 2: Convert to fraction form
    28,536.05/42,811.95 = 11,903.90/x
  3. Step 3: Cross multiply
    28,536.05x = 42,811.95 × 11,903.90
  4. Step 4: Simplify right side
    28,536.05x = 509,629,171.61
  5. Step 5: Solve for x
    x = 509,629,171.61/28,536.05
  6. Step 6: Final answer
    x = 17,859.14

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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.