Home / 13,078.19-18,045.64-7,411.76

Finding the Fourth Proportional to 13,078.19, 18,045.64 and 7,411.76

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Solution

The fourth proportional to 13,078.19, 18,045.64 and 7,411.76 is: 10,226.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,078.19 : 18,045.64 = 7,411.76 : x
  2. Step 2: Convert to fraction form
    13,078.19/18,045.64 = 7,411.76/x
  3. Step 3: Cross multiply
    13,078.19x = 18,045.64 × 7,411.76
  4. Step 4: Simplify right side
    13,078.19x = 133,749,952.73
  5. Step 5: Solve for x
    x = 133,749,952.73/13,078.19
  6. Step 6: Final answer
    x = 10,226.95

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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.