Home / 10,137.20-15,185.96-9,036.40

Finding the Fourth Proportional to 10,137.20, 15,185.96 and 9,036.40

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Solution

The fourth proportional to 10,137.20, 15,185.96 and 9,036.40 is: 13,536.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,137.20 : 15,185.96 = 9,036.40 : x
  2. Step 2: Convert to fraction form
    10,137.20/15,185.96 = 9,036.40/x
  3. Step 3: Cross multiply
    10,137.20x = 15,185.96 × 9,036.40
  4. Step 4: Simplify right side
    10,137.20x = 137,226,408.94
  5. Step 5: Solve for x
    x = 137,226,408.94/10,137.20
  6. Step 6: Final answer
    x = 13,536.91

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1.5x scale

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.