Home / 15,823.86-21,831.12-12,190.98

Finding the Fourth Proportional to 15,823.86, 21,831.12 and 12,190.98

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Solution

The fourth proportional to 15,823.86, 21,831.12 and 12,190.98 is: 16,819.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,823.86 : 21,831.12 = 12,190.98 : x
  2. Step 2: Convert to fraction form
    15,823.86/21,831.12 = 12,190.98/x
  3. Step 3: Cross multiply
    15,823.86x = 21,831.12 × 12,190.98
  4. Step 4: Simplify right side
    15,823.86x = 266,142,747.30
  5. Step 5: Solve for x
    x = 266,142,747.30/15,823.86
  6. Step 6: Final answer
    x = 16,819.08

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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.