Home / 20,670.10-31,005.15-6,817.30

Finding the Fourth Proportional to 20,670.10, 31,005.15 and 6,817.30

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Solution

The fourth proportional to 20,670.10, 31,005.15 and 6,817.30 is: 10,225.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,670.10 : 31,005.15 = 6,817.30 : x
  2. Step 2: Convert to fraction form
    20,670.10/31,005.15 = 6,817.30/x
  3. Step 3: Cross multiply
    20,670.10x = 31,005.15 × 6,817.30
  4. Step 4: Simplify right side
    20,670.10x = 211,371,409.10
  5. Step 5: Solve for x
    x = 211,371,409.10/20,670.10
  6. Step 6: Final answer
    x = 10,225.95

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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.