Home / 10,120.12-13,966.86-6,141.40

Finding the Fourth Proportional to 10,120.12, 13,966.86 and 6,141.40

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Solution

The fourth proportional to 10,120.12, 13,966.86 and 6,141.40 is: 8,475.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,120.12 : 13,966.86 = 6,141.40 : x
  2. Step 2: Convert to fraction form
    10,120.12/13,966.86 = 6,141.40/x
  3. Step 3: Cross multiply
    10,120.12x = 13,966.86 × 6,141.40
  4. Step 4: Simplify right side
    10,120.12x = 85,776,074.00
  5. Step 5: Solve for x
    x = 85,776,074.00/10,120.12
  6. Step 6: Final answer
    x = 8,475.80

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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.