Home / 9,816.20-13,538.57-6,939.84

Finding the Fourth Proportional to 9,816.20, 13,538.57 and 6,939.84

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Solution

The fourth proportional to 9,816.20, 13,538.57 and 6,939.84 is: 9,571.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,816.20 : 13,538.57 = 6,939.84 : x
  2. Step 2: Convert to fraction form
    9,816.20/13,538.57 = 6,939.84/x
  3. Step 3: Cross multiply
    9,816.20x = 13,538.57 × 6,939.84
  4. Step 4: Simplify right side
    9,816.20x = 93,955,509.63
  5. Step 5: Solve for x
    x = 93,955,509.63/9,816.20
  6. Step 6: Final answer
    x = 9,571.47

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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.