Home / 18,386.51-27,569.68-8,520.35

Finding the Fourth Proportional to 18,386.51, 27,569.68 and 8,520.35

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Solution

The fourth proportional to 18,386.51, 27,569.68 and 8,520.35 is: 12,775.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,386.51 : 27,569.68 = 8,520.35 : x
  2. Step 2: Convert to fraction form
    18,386.51/27,569.68 = 8,520.35/x
  3. Step 3: Cross multiply
    18,386.51x = 27,569.68 × 8,520.35
  4. Step 4: Simplify right side
    18,386.51x = 234,903,322.99
  5. Step 5: Solve for x
    x = 234,903,322.99/18,386.51
  6. Step 6: Final answer
    x = 12,775.85

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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.