Home / 14,120.02-21,178.06-7,806.58

Finding the Fourth Proportional to 14,120.02, 21,178.06 and 7,806.58

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Solution

The fourth proportional to 14,120.02, 21,178.06 and 7,806.58 is: 11,708.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,120.02 : 21,178.06 = 7,806.58 : x
  2. Step 2: Convert to fraction form
    14,120.02/21,178.06 = 7,806.58/x
  3. Step 3: Cross multiply
    14,120.02x = 21,178.06 × 7,806.58
  4. Step 4: Simplify right side
    14,120.02x = 165,328,147.17
  5. Step 5: Solve for x
    x = 165,328,147.17/14,120.02
  6. Step 6: Final answer
    x = 11,708.77

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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.