Home / 10,121.04-13,963.20-6,140.64

Finding the Fourth Proportional to 10,121.04, 13,963.20 and 6,140.64

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Solution

The fourth proportional to 10,121.04, 13,963.20 and 6,140.64 is: 8,471.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,121.04 : 13,963.20 = 6,140.64 : x
  2. Step 2: Convert to fraction form
    10,121.04/13,963.20 = 6,140.64/x
  3. Step 3: Cross multiply
    10,121.04x = 13,963.20 × 6,140.64
  4. Step 4: Simplify right side
    10,121.04x = 85,742,984.45
  5. Step 5: Solve for x
    x = 85,742,984.45/10,121.04
  6. Step 6: Final answer
    x = 8,471.76

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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.