Home / 10,771.19-14,854.21-6,990.31

Finding the Fourth Proportional to 10,771.19, 14,854.21 and 6,990.31

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Solution

The fourth proportional to 10,771.19, 14,854.21 and 6,990.31 is: 9,640.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,771.19 : 14,854.21 = 6,990.31 : x
  2. Step 2: Convert to fraction form
    10,771.19/14,854.21 = 6,990.31/x
  3. Step 3: Cross multiply
    10,771.19x = 14,854.21 × 6,990.31
  4. Step 4: Simplify right side
    10,771.19x = 103,835,478.09
  5. Step 5: Solve for x
    x = 103,835,478.09/10,771.19
  6. Step 6: Final answer
    x = 9,640.12

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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.