Home / 11,190.40-15,443.93-6,410.72

Finding the Fourth Proportional to 11,190.40, 15,443.93 and 6,410.72

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Solution

The fourth proportional to 11,190.40, 15,443.93 and 6,410.72 is: 8,847.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,190.40 : 15,443.93 = 6,410.72 : x
  2. Step 2: Convert to fraction form
    11,190.40/15,443.93 = 6,410.72/x
  3. Step 3: Cross multiply
    11,190.40x = 15,443.93 × 6,410.72
  4. Step 4: Simplify right side
    11,190.40x = 99,006,710.93
  5. Step 5: Solve for x
    x = 99,006,710.93/11,190.40
  6. Step 6: Final answer
    x = 8,847.47

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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.