Home / 20,470.08-30,705.12-6,620.16

Finding the Fourth Proportional to 20,470.08, 30,705.12 and 6,620.16

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Solution

The fourth proportional to 20,470.08, 30,705.12 and 6,620.16 is: 9,930.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,470.08 : 30,705.12 = 6,620.16 : x
  2. Step 2: Convert to fraction form
    20,470.08/30,705.12 = 6,620.16/x
  3. Step 3: Cross multiply
    20,470.08x = 30,705.12 × 6,620.16
  4. Step 4: Simplify right side
    20,470.08x = 203,272,807.22
  5. Step 5: Solve for x
    x = 203,272,807.22/20,470.08
  6. Step 6: Final answer
    x = 9,930.24

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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.