Home / 18,831.11-28,246.70-7,730.06

Finding the Fourth Proportional to 18,831.11, 28,246.70 and 7,730.06

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Solution

The fourth proportional to 18,831.11, 28,246.70 and 7,730.06 is: 11,595.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,831.11 : 28,246.70 = 7,730.06 : x
  2. Step 2: Convert to fraction form
    18,831.11/28,246.70 = 7,730.06/x
  3. Step 3: Cross multiply
    18,831.11x = 28,246.70 × 7,730.06
  4. Step 4: Simplify right side
    18,831.11x = 218,348,685.80
  5. Step 5: Solve for x
    x = 218,348,685.80/18,831.11
  6. Step 6: Final answer
    x = 11,595.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.