Home / 13,347.72-18,428.38-8,569.94

Finding the Fourth Proportional to 13,347.72, 18,428.38 and 8,569.94

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Solution

The fourth proportional to 13,347.72, 18,428.38 and 8,569.94 is: 11,831.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,347.72 : 18,428.38 = 8,569.94 : x
  2. Step 2: Convert to fraction form
    13,347.72/18,428.38 = 8,569.94/x
  3. Step 3: Cross multiply
    13,347.72x = 18,428.38 × 8,569.94
  4. Step 4: Simplify right side
    13,347.72x = 157,929,997.33
  5. Step 5: Solve for x
    x = 157,929,997.33/13,347.72
  6. Step 6: Final answer
    x = 11,831.98

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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.