Home / 11,695.42-16,139.32-6,390.23

Finding the Fourth Proportional to 11,695.42, 16,139.32 and 6,390.23

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Solution

The fourth proportional to 11,695.42, 16,139.32 and 6,390.23 is: 8,818.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,695.42 : 16,139.32 = 6,390.23 : x
  2. Step 2: Convert to fraction form
    11,695.42/16,139.32 = 6,390.23/x
  3. Step 3: Cross multiply
    11,695.42x = 16,139.32 × 6,390.23
  4. Step 4: Simplify right side
    11,695.42x = 103,133,996.90
  5. Step 5: Solve for x
    x = 103,133,996.90/11,695.42
  6. Step 6: Final answer
    x = 8,818.32

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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.