Home / 12,201.63-18,312.17-4,807.95

Finding the Fourth Proportional to 12,201.63, 18,312.17 and 4,807.95

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Solution

The fourth proportional to 12,201.63, 18,312.17 and 4,807.95 is: 7,215.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,201.63 : 18,312.17 = 4,807.95 : x
  2. Step 2: Convert to fraction form
    12,201.63/18,312.17 = 4,807.95/x
  3. Step 3: Cross multiply
    12,201.63x = 18,312.17 × 4,807.95
  4. Step 4: Simplify right side
    12,201.63x = 88,043,973.71
  5. Step 5: Solve for x
    x = 88,043,973.71/12,201.63
  6. Step 6: Final answer
    x = 7,215.76

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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.