Home / 21,312.14-31,968.81-6,520.73

Finding the Fourth Proportional to 21,312.14, 31,968.81 and 6,520.73

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Solution

The fourth proportional to 21,312.14, 31,968.81 and 6,520.73 is: 9,781.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,312.14 : 31,968.81 = 6,520.73 : x
  2. Step 2: Convert to fraction form
    21,312.14/31,968.81 = 6,520.73/x
  3. Step 3: Cross multiply
    21,312.14x = 31,968.81 × 6,520.73
  4. Step 4: Simplify right side
    21,312.14x = 208,459,818.59
  5. Step 5: Solve for x
    x = 208,459,818.59/21,312.14
  6. Step 6: Final answer
    x = 9,781.27

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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.