Home / 13,312.90-19,981.62-6,743.68

Finding the Fourth Proportional to 13,312.90, 19,981.62 and 6,743.68

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Solution

The fourth proportional to 13,312.90, 19,981.62 and 6,743.68 is: 10,121.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,312.90 : 19,981.62 = 6,743.68 : x
  2. Step 2: Convert to fraction form
    13,312.90/19,981.62 = 6,743.68/x
  3. Step 3: Cross multiply
    13,312.90x = 19,981.62 × 6,743.68
  4. Step 4: Simplify right side
    13,312.90x = 134,749,651.16
  5. Step 5: Solve for x
    x = 134,749,651.16/13,312.90
  6. Step 6: Final answer
    x = 10,121.74

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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.