Home / 13,126.50-19,701.12-6,890.92

Finding the Fourth Proportional to 13,126.50, 19,701.12 and 6,890.92

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Solution

The fourth proportional to 13,126.50, 19,701.12 and 6,890.92 is: 10,342.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,126.50 : 19,701.12 = 6,890.92 : x
  2. Step 2: Convert to fraction form
    13,126.50/19,701.12 = 6,890.92/x
  3. Step 3: Cross multiply
    13,126.50x = 19,701.12 × 6,890.92
  4. Step 4: Simplify right side
    13,126.50x = 135,758,841.83
  5. Step 5: Solve for x
    x = 135,758,841.83/13,126.50
  6. Step 6: Final answer
    x = 10,342.35

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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.