Home / 10,156.32-14,007.60-6,423.84

Finding the Fourth Proportional to 10,156.32, 14,007.60 and 6,423.84

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Solution

The fourth proportional to 10,156.32, 14,007.60 and 6,423.84 is: 8,859.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,156.32 : 14,007.60 = 6,423.84 : x
  2. Step 2: Convert to fraction form
    10,156.32/14,007.60 = 6,423.84/x
  3. Step 3: Cross multiply
    10,156.32x = 14,007.60 × 6,423.84
  4. Step 4: Simplify right side
    10,156.32x = 89,982,581.18
  5. Step 5: Solve for x
    x = 89,982,581.18/10,156.32
  6. Step 6: Final answer
    x = 8,859.76

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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.