Home / 15,818.86-21,831.33-8,746.66

Finding the Fourth Proportional to 15,818.86, 21,831.33 and 8,746.66

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Solution

The fourth proportional to 15,818.86, 21,831.33 and 8,746.66 is: 12,071.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,818.86 : 21,831.33 = 8,746.66 : x
  2. Step 2: Convert to fraction form
    15,818.86/21,831.33 = 8,746.66/x
  3. Step 3: Cross multiply
    15,818.86x = 21,831.33 × 8,746.66
  4. Step 4: Simplify right side
    15,818.86x = 190,951,220.86
  5. Step 5: Solve for x
    x = 190,951,220.86/15,818.86
  6. Step 6: Final answer
    x = 12,071.11

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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.