Home / 13,995.12-20,984.61-6,960.81

Finding the Fourth Proportional to 13,995.12, 20,984.61 and 6,960.81

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Solution

The fourth proportional to 13,995.12, 20,984.61 and 6,960.81 is: 10,437.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,995.12 : 20,984.61 = 6,960.81 : x
  2. Step 2: Convert to fraction form
    13,995.12/20,984.61 = 6,960.81/x
  3. Step 3: Cross multiply
    13,995.12x = 20,984.61 × 6,960.81
  4. Step 4: Simplify right side
    13,995.12x = 146,069,883.13
  5. Step 5: Solve for x
    x = 146,069,883.13/13,995.12
  6. Step 6: Final answer
    x = 10,437.20

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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.