Home / 10,203.78-15,291.30-8,114.51

Finding the Fourth Proportional to 10,203.78, 15,291.30 and 8,114.51

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Solution

The fourth proportional to 10,203.78, 15,291.30 and 8,114.51 is: 12,160.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,203.78 : 15,291.30 = 8,114.51 : x
  2. Step 2: Convert to fraction form
    10,203.78/15,291.30 = 8,114.51/x
  3. Step 3: Cross multiply
    10,203.78x = 15,291.30 × 8,114.51
  4. Step 4: Simplify right side
    10,203.78x = 124,081,406.76
  5. Step 5: Solve for x
    x = 124,081,406.76/10,203.78
  6. Step 6: Final answer
    x = 12,160.34

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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.