Home / 12,255.06-16,911.93-6,666.18

Finding the Fourth Proportional to 12,255.06, 16,911.93 and 6,666.18

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Solution

The fourth proportional to 12,255.06, 16,911.93 and 6,666.18 is: 9,199.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,255.06 : 16,911.93 = 6,666.18 : x
  2. Step 2: Convert to fraction form
    12,255.06/16,911.93 = 6,666.18/x
  3. Step 3: Cross multiply
    12,255.06x = 16,911.93 × 6,666.18
  4. Step 4: Simplify right side
    12,255.06x = 112,737,969.53
  5. Step 5: Solve for x
    x = 112,737,969.53/12,255.06
  6. Step 6: Final answer
    x = 9,199.30

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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.