Home / 12,077.81-16,664.22-6,972.08

Finding the Fourth Proportional to 12,077.81, 16,664.22 and 6,972.08

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Solution

The fourth proportional to 12,077.81, 16,664.22 and 6,972.08 is: 9,619.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,077.81 : 16,664.22 = 6,972.08 : x
  2. Step 2: Convert to fraction form
    12,077.81/16,664.22 = 6,972.08/x
  3. Step 3: Cross multiply
    12,077.81x = 16,664.22 × 6,972.08
  4. Step 4: Simplify right side
    12,077.81x = 116,184,191.66
  5. Step 5: Solve for x
    x = 116,184,191.66/12,077.81
  6. Step 6: Final answer
    x = 9,619.64

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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.