Home / 10,387.79-14,350.83-6,811.28

Finding the Fourth Proportional to 10,387.79, 14,350.83 and 6,811.28

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Solution

The fourth proportional to 10,387.79, 14,350.83 and 6,811.28 is: 9,409.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,387.79 : 14,350.83 = 6,811.28 : x
  2. Step 2: Convert to fraction form
    10,387.79/14,350.83 = 6,811.28/x
  3. Step 3: Cross multiply
    10,387.79x = 14,350.83 × 6,811.28
  4. Step 4: Simplify right side
    10,387.79x = 97,747,521.36
  5. Step 5: Solve for x
    x = 97,747,521.36/10,387.79
  6. Step 6: Final answer
    x = 9,409.85

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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.