Home / 28,530.73-42,772.91-11,903.15

Finding the Fourth Proportional to 28,530.73, 42,772.91 and 11,903.15

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Solution

The fourth proportional to 28,530.73, 42,772.91 and 11,903.15 is: 17,845.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,530.73 : 42,772.91 = 11,903.15 : x
  2. Step 2: Convert to fraction form
    28,530.73/42,772.91 = 11,903.15/x
  3. Step 3: Cross multiply
    28,530.73x = 42,772.91 × 11,903.15
  4. Step 4: Simplify right side
    28,530.73x = 509,132,478.04
  5. Step 5: Solve for x
    x = 509,132,478.04/28,530.73
  6. Step 6: Final answer
    x = 17,845.06

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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.