Home / 30,440.25-45,660.47-11,972.25

Finding the Fourth Proportional to 30,440.25, 45,660.47 and 11,972.25

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Solution

The fourth proportional to 30,440.25, 45,660.47 and 11,972.25 is: 17,958.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,440.25 : 45,660.47 = 11,972.25 : x
  2. Step 2: Convert to fraction form
    30,440.25/45,660.47 = 11,972.25/x
  3. Step 3: Cross multiply
    30,440.25x = 45,660.47 × 11,972.25
  4. Step 4: Simplify right side
    30,440.25x = 546,658,502.10
  5. Step 5: Solve for x
    x = 546,658,502.10/30,440.25
  6. Step 6: Final answer
    x = 17,958.41

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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.