Home / 15,819.93-21,831.96-8,746.81

Finding the Fourth Proportional to 15,819.93, 21,831.96 and 8,746.81

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Solution

The fourth proportional to 15,819.93, 21,831.96 and 8,746.81 is: 12,070.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,819.93 : 21,831.96 = 8,746.81 : x
  2. Step 2: Convert to fraction form
    15,819.93/21,831.96 = 8,746.81/x
  3. Step 3: Cross multiply
    15,819.93x = 21,831.96 × 8,746.81
  4. Step 4: Simplify right side
    15,819.93x = 190,960,006.05
  5. Step 5: Solve for x
    x = 190,960,006.05/15,819.93
  6. Step 6: Final answer
    x = 12,070.85

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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.