Home / 10,620.20-14,653.68-6,142.32

Finding the Fourth Proportional to 10,620.20, 14,653.68 and 6,142.32

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Solution

The fourth proportional to 10,620.20, 14,653.68 and 6,142.32 is: 8,475.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,620.20 : 14,653.68 = 6,142.32 : x
  2. Step 2: Convert to fraction form
    10,620.20/14,653.68 = 6,142.32/x
  3. Step 3: Cross multiply
    10,620.20x = 14,653.68 × 6,142.32
  4. Step 4: Simplify right side
    10,620.20x = 90,007,591.74
  5. Step 5: Solve for x
    x = 90,007,591.74/10,620.20
  6. Step 6: Final answer
    x = 8,475.14

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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.