Home / 18,875.24-28,325.61-7,188.15

Finding the Fourth Proportional to 18,875.24, 28,325.61 and 7,188.15

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Solution

The fourth proportional to 18,875.24, 28,325.61 and 7,188.15 is: 10,787.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,875.24 : 28,325.61 = 7,188.15 : x
  2. Step 2: Convert to fraction form
    18,875.24/28,325.61 = 7,188.15/x
  3. Step 3: Cross multiply
    18,875.24x = 28,325.61 × 7,188.15
  4. Step 4: Simplify right side
    18,875.24x = 203,608,697.58
  5. Step 5: Solve for x
    x = 203,608,697.58/18,875.24
  6. Step 6: Final answer
    x = 10,787.08

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1.5x scale

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.