Home / 13,612.40-18,783.60-7,643.24

Finding the Fourth Proportional to 13,612.40, 18,783.60 and 7,643.24

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Solution

The fourth proportional to 13,612.40, 18,783.60 and 7,643.24 is: 10,546.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,612.40 : 18,783.60 = 7,643.24 : x
  2. Step 2: Convert to fraction form
    13,612.40/18,783.60 = 7,643.24/x
  3. Step 3: Cross multiply
    13,612.40x = 18,783.60 × 7,643.24
  4. Step 4: Simplify right side
    13,612.40x = 143,567,562.86
  5. Step 5: Solve for x
    x = 143,567,562.86/13,612.40
  6. Step 6: Final answer
    x = 10,546.82

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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.