Home / 13,100.98-19,639.11-6,520.94

Finding the Fourth Proportional to 13,100.98, 19,639.11 and 6,520.94

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Solution

The fourth proportional to 13,100.98, 19,639.11 and 6,520.94 is: 9,775.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,100.98 : 19,639.11 = 6,520.94 : x
  2. Step 2: Convert to fraction form
    13,100.98/19,639.11 = 6,520.94/x
  3. Step 3: Cross multiply
    13,100.98x = 19,639.11 × 6,520.94
  4. Step 4: Simplify right side
    13,100.98x = 128,065,457.96
  5. Step 5: Solve for x
    x = 128,065,457.96/13,100.98
  6. Step 6: Final answer
    x = 9,775.26

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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.