Home / 20,439.48-30,665.38-7,292.86

Finding the Fourth Proportional to 20,439.48, 30,665.38 and 7,292.86

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Solution

The fourth proportional to 20,439.48, 30,665.38 and 7,292.86 is: 10,941.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,439.48 : 30,665.38 = 7,292.86 : x
  2. Step 2: Convert to fraction form
    20,439.48/30,665.38 = 7,292.86/x
  3. Step 3: Cross multiply
    20,439.48x = 30,665.38 × 7,292.86
  4. Step 4: Simplify right side
    20,439.48x = 223,638,323.19
  5. Step 5: Solve for x
    x = 223,638,323.19/20,439.48
  6. Step 6: Final answer
    x = 10,941.49

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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.