Home / 28,130.73-42,187.59-9,405.96

Finding the Fourth Proportional to 28,130.73, 42,187.59 and 9,405.96

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Solution

The fourth proportional to 28,130.73, 42,187.59 and 9,405.96 is: 14,106.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,130.73 : 42,187.59 = 9,405.96 : x
  2. Step 2: Convert to fraction form
    28,130.73/42,187.59 = 9,405.96/x
  3. Step 3: Cross multiply
    28,130.73x = 42,187.59 × 9,405.96
  4. Step 4: Simplify right side
    28,130.73x = 396,814,784.04
  5. Step 5: Solve for x
    x = 396,814,784.04/28,130.73
  6. Step 6: Final answer
    x = 14,106.10

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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.