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Finding the Fourth Proportional to 12,885.66, 19,332.81 and 5,486.94

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Solution

The fourth proportional to 12,885.66, 19,332.81 and 5,486.94 is: 8,232.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,885.66 : 19,332.81 = 5,486.94 : x
  2. Step 2: Convert to fraction form
    12,885.66/19,332.81 = 5,486.94/x
  3. Step 3: Cross multiply
    12,885.66x = 19,332.81 × 5,486.94
  4. Step 4: Simplify right side
    12,885.66x = 106,077,968.50
  5. Step 5: Solve for x
    x = 106,077,968.50/12,885.66
  6. Step 6: Final answer
    x = 8,232.25

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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.