Home / 12,240.40-18,355.20-4,842.40

Finding the Fourth Proportional to 12,240.40, 18,355.20 and 4,842.40

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Solution

The fourth proportional to 12,240.40, 18,355.20 and 4,842.40 is: 7,261.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,240.40 : 18,355.20 = 4,842.40 : x
  2. Step 2: Convert to fraction form
    12,240.40/18,355.20 = 4,842.40/x
  3. Step 3: Cross multiply
    12,240.40x = 18,355.20 × 4,842.40
  4. Step 4: Simplify right side
    12,240.40x = 88,883,220.48
  5. Step 5: Solve for x
    x = 88,883,220.48/12,240.40
  6. Step 6: Final answer
    x = 7,261.46

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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.