Home / 13,081.31-18,043.05-8,603.63

Finding the Fourth Proportional to 13,081.31, 18,043.05 and 8,603.63

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Solution

The fourth proportional to 13,081.31, 18,043.05 and 8,603.63 is: 11,866.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,081.31 : 18,043.05 = 8,603.63 : x
  2. Step 2: Convert to fraction form
    13,081.31/18,043.05 = 8,603.63/x
  3. Step 3: Cross multiply
    13,081.31x = 18,043.05 × 8,603.63
  4. Step 4: Simplify right side
    13,081.31x = 155,235,636.06
  5. Step 5: Solve for x
    x = 155,235,636.06/13,081.31
  6. Step 6: Final answer
    x = 11,866.98

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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.