Home / 20,273.90-30,383.18-12,865.07

Finding the Fourth Proportional to 20,273.90, 30,383.18 and 12,865.07

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Solution

The fourth proportional to 20,273.90, 30,383.18 and 12,865.07 is: 19,280.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,273.90 : 30,383.18 = 12,865.07 : x
  2. Step 2: Convert to fraction form
    20,273.90/30,383.18 = 12,865.07/x
  3. Step 3: Cross multiply
    20,273.90x = 30,383.18 × 12,865.07
  4. Step 4: Simplify right side
    20,273.90x = 390,881,797.40
  5. Step 5: Solve for x
    x = 390,881,797.40/20,273.90
  6. Step 6: Final answer
    x = 19,280.05

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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.