Home / 13,890.55-19,149.20-8,582.35

Finding the Fourth Proportional to 13,890.55, 19,149.20 and 8,582.35

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Solution

The fourth proportional to 13,890.55, 19,149.20 and 8,582.35 is: 11,831.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,890.55 : 19,149.20 = 8,582.35 : x
  2. Step 2: Convert to fraction form
    13,890.55/19,149.20 = 8,582.35/x
  3. Step 3: Cross multiply
    13,890.55x = 19,149.20 × 8,582.35
  4. Step 4: Simplify right side
    13,890.55x = 164,345,093.71
  5. Step 5: Solve for x
    x = 164,345,093.71/13,890.55
  6. Step 6: Final answer
    x = 11,831.43

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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.