Home / 13,703.12-18,910.32-7,415.50

Finding the Fourth Proportional to 13,703.12, 18,910.32 and 7,415.50

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Solution

The fourth proportional to 13,703.12, 18,910.32 and 7,415.50 is: 10,233.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,703.12 : 18,910.32 = 7,415.50 : x
  2. Step 2: Convert to fraction form
    13,703.12/18,910.32 = 7,415.50/x
  3. Step 3: Cross multiply
    13,703.12x = 18,910.32 × 7,415.50
  4. Step 4: Simplify right side
    13,703.12x = 140,229,477.96
  5. Step 5: Solve for x
    x = 140,229,477.96/13,703.12
  6. Step 6: Final answer
    x = 10,233.40

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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.