Home / 11,190.80-16,798.40-6,515.92

Finding the Fourth Proportional to 11,190.80, 16,798.40 and 6,515.92

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Solution

The fourth proportional to 11,190.80, 16,798.40 and 6,515.92 is: 9,780.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,190.80 : 16,798.40 = 6,515.92 : x
  2. Step 2: Convert to fraction form
    11,190.80/16,798.40 = 6,515.92/x
  3. Step 3: Cross multiply
    11,190.80x = 16,798.40 × 6,515.92
  4. Step 4: Simplify right side
    11,190.80x = 109,457,030.53
  5. Step 5: Solve for x
    x = 109,457,030.53/11,190.80
  6. Step 6: Final answer
    x = 9,780.98

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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.