Home / 15,819.92-21,831.18-8,746.28

Finding the Fourth Proportional to 15,819.92, 21,831.18 and 8,746.28

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Solution

The fourth proportional to 15,819.92, 21,831.18 and 8,746.28 is: 12,069.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,819.92 : 21,831.18 = 8,746.28 : x
  2. Step 2: Convert to fraction form
    15,819.92/21,831.18 = 8,746.28/x
  3. Step 3: Cross multiply
    15,819.92x = 21,831.18 × 8,746.28
  4. Step 4: Simplify right side
    15,819.92x = 190,941,613.01
  5. Step 5: Solve for x
    x = 190,941,613.01/15,819.92
  6. Step 6: Final answer
    x = 12,069.70

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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.