Home / 11,114.71-15,339.63-6,398.89

Finding the Fourth Proportional to 11,114.71, 15,339.63 and 6,398.89

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Solution

The fourth proportional to 11,114.71, 15,339.63 and 6,398.89 is: 8,831.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,114.71 : 15,339.63 = 6,398.89 : x
  2. Step 2: Convert to fraction form
    11,114.71/15,339.63 = 6,398.89/x
  3. Step 3: Cross multiply
    11,114.71x = 15,339.63 × 6,398.89
  4. Step 4: Simplify right side
    11,114.71x = 98,156,605.01
  5. Step 5: Solve for x
    x = 98,156,605.01/11,114.71
  6. Step 6: Final answer
    x = 8,831.23

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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.