Home / 11,421.90-15,753.53-9,831.26

Finding the Fourth Proportional to 11,421.90, 15,753.53 and 9,831.26

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Solution

The fourth proportional to 11,421.90, 15,753.53 and 9,831.26 is: 13,559.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,421.90 : 15,753.53 = 9,831.26 : x
  2. Step 2: Convert to fraction form
    11,421.90/15,753.53 = 9,831.26/x
  3. Step 3: Cross multiply
    11,421.90x = 15,753.53 × 9,831.26
  4. Step 4: Simplify right side
    11,421.90x = 154,876,921.42
  5. Step 5: Solve for x
    x = 154,876,921.42/11,421.90
  6. Step 6: Final answer
    x = 13,559.65

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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.