Home / 30,440.64-42,003.20-18,497.60

Finding the Fourth Proportional to 30,440.64, 42,003.20 and 18,497.60

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Solution

The fourth proportional to 30,440.64, 42,003.20 and 18,497.60 is: 25,523.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,440.64 : 42,003.20 = 18,497.60 : x
  2. Step 2: Convert to fraction form
    30,440.64/42,003.20 = 18,497.60/x
  3. Step 3: Cross multiply
    30,440.64x = 42,003.20 × 18,497.60
  4. Step 4: Simplify right side
    30,440.64x = 776,958,392.32
  5. Step 5: Solve for x
    x = 776,958,392.32/30,440.64
  6. Step 6: Final answer
    x = 25,523.72

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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.