Home / 12,135.64-18,203.40-5,210.08

Finding the Fourth Proportional to 12,135.64, 18,203.40 and 5,210.08

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Solution

The fourth proportional to 12,135.64, 18,203.40 and 5,210.08 is: 7,815.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,135.64 : 18,203.40 = 5,210.08 : x
  2. Step 2: Convert to fraction form
    12,135.64/18,203.40 = 5,210.08/x
  3. Step 3: Cross multiply
    12,135.64x = 18,203.40 × 5,210.08
  4. Step 4: Simplify right side
    12,135.64x = 94,841,170.27
  5. Step 5: Solve for x
    x = 94,841,170.27/12,135.64
  6. Step 6: Final answer
    x = 7,815.09

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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.