Home / 45,214.40-67,831.32-18,905.60

Finding the Fourth Proportional to 45,214.40, 67,831.32 and 18,905.60

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Solution

The fourth proportional to 45,214.40, 67,831.32 and 18,905.60 is: 28,362.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,214.40 : 67,831.32 = 18,905.60 : x
  2. Step 2: Convert to fraction form
    45,214.40/67,831.32 = 18,905.60/x
  3. Step 3: Cross multiply
    45,214.40x = 67,831.32 × 18,905.60
  4. Step 4: Simplify right side
    45,214.40x = 1,282,391,803.39
  5. Step 5: Solve for x
    x = 1,282,391,803.39/45,214.40
  6. Step 6: Final answer
    x = 28,362.46

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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.