Home / 18,831.59-28,215.48-12,502.05

Finding the Fourth Proportional to 18,831.59, 28,215.48 and 12,502.05

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Solution

The fourth proportional to 18,831.59, 28,215.48 and 12,502.05 is: 18,731.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,831.59 : 28,215.48 = 12,502.05 : x
  2. Step 2: Convert to fraction form
    18,831.59/28,215.48 = 12,502.05/x
  3. Step 3: Cross multiply
    18,831.59x = 28,215.48 × 12,502.05
  4. Step 4: Simplify right side
    18,831.59x = 352,751,341.73
  5. Step 5: Solve for x
    x = 352,751,341.73/18,831.59
  6. Step 6: Final answer
    x = 18,731.90

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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.