Home / 12,117.87-16,722.75-7,082.30

Finding the Fourth Proportional to 12,117.87, 16,722.75 and 7,082.30

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Solution

The fourth proportional to 12,117.87, 16,722.75 and 7,082.30 is: 9,773.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,117.87 : 16,722.75 = 7,082.30 : x
  2. Step 2: Convert to fraction form
    12,117.87/16,722.75 = 7,082.30/x
  3. Step 3: Cross multiply
    12,117.87x = 16,722.75 × 7,082.30
  4. Step 4: Simplify right side
    12,117.87x = 118,435,448.71
  5. Step 5: Solve for x
    x = 118,435,448.71/12,117.87
  6. Step 6: Final answer
    x = 9,773.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.