Home / 9,727.04-13,420.32-6,939.20

Finding the Fourth Proportional to 9,727.04, 13,420.32 and 6,939.20

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Solution

The fourth proportional to 9,727.04, 13,420.32 and 6,939.20 is: 9,573.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,727.04 : 13,420.32 = 6,939.20 : x
  2. Step 2: Convert to fraction form
    9,727.04/13,420.32 = 6,939.20/x
  3. Step 3: Cross multiply
    9,727.04x = 13,420.32 × 6,939.20
  4. Step 4: Simplify right side
    9,727.04x = 93,126,284.54
  5. Step 5: Solve for x
    x = 93,126,284.54/9,727.04
  6. Step 6: Final answer
    x = 9,573.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.