Home / 20,809.48-31,209.60-6,015.16

Finding the Fourth Proportional to 20,809.48, 31,209.60 and 6,015.16

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Solution

The fourth proportional to 20,809.48, 31,209.60 and 6,015.16 is: 9,021.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,809.48 : 31,209.60 = 6,015.16 : x
  2. Step 2: Convert to fraction form
    20,809.48/31,209.60 = 6,015.16/x
  3. Step 3: Cross multiply
    20,809.48x = 31,209.60 × 6,015.16
  4. Step 4: Simplify right side
    20,809.48x = 187,730,737.54
  5. Step 5: Solve for x
    x = 187,730,737.54/20,809.48
  6. Step 6: Final answer
    x = 9,021.40

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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.