Home / 18,831.61-28,247.45-7,730.56

Finding the Fourth Proportional to 18,831.61, 28,247.45 and 7,730.56

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Solution

The fourth proportional to 18,831.61, 28,247.45 and 7,730.56 is: 11,595.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,831.61 : 28,247.45 = 7,730.56 : x
  2. Step 2: Convert to fraction form
    18,831.61/28,247.45 = 7,730.56/x
  3. Step 3: Cross multiply
    18,831.61x = 28,247.45 × 7,730.56
  4. Step 4: Simplify right side
    18,831.61x = 218,368,607.07
  5. Step 5: Solve for x
    x = 218,368,607.07/18,831.61
  6. Step 6: Final answer
    x = 11,595.85

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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.