Home / 20,188.63-30,280.57-5,398.69

Finding the Fourth Proportional to 20,188.63, 30,280.57 and 5,398.69

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Solution

The fourth proportional to 20,188.63, 30,280.57 and 5,398.69 is: 8,097.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,188.63 : 30,280.57 = 5,398.69 : x
  2. Step 2: Convert to fraction form
    20,188.63/30,280.57 = 5,398.69/x
  3. Step 3: Cross multiply
    20,188.63x = 30,280.57 × 5,398.69
  4. Step 4: Simplify right side
    20,188.63x = 163,475,410.45
  5. Step 5: Solve for x
    x = 163,475,410.45/20,188.63
  6. Step 6: Final answer
    x = 8,097.40

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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.