Home / 10,864.64-16,318.72-6,490.56

Finding the Fourth Proportional to 10,864.64, 16,318.72 and 6,490.56

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Solution

The fourth proportional to 10,864.64, 16,318.72 and 6,490.56 is: 9,748.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,864.64 : 16,318.72 = 6,490.56 : x
  2. Step 2: Convert to fraction form
    10,864.64/16,318.72 = 6,490.56/x
  3. Step 3: Cross multiply
    10,864.64x = 16,318.72 × 6,490.56
  4. Step 4: Simplify right side
    10,864.64x = 105,917,631.28
  5. Step 5: Solve for x
    x = 105,917,631.28/10,864.64
  6. Step 6: Final answer
    x = 9,748.84

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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.