Home / 10,203.12-14,088.64-8,315.04

Finding the Fourth Proportional to 10,203.12, 14,088.64 and 8,315.04

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Solution

The fourth proportional to 10,203.12, 14,088.64 and 8,315.04 is: 11,481.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,203.12 : 14,088.64 = 8,315.04 : x
  2. Step 2: Convert to fraction form
    10,203.12/14,088.64 = 8,315.04/x
  3. Step 3: Cross multiply
    10,203.12x = 14,088.64 × 8,315.04
  4. Step 4: Simplify right side
    10,203.12x = 117,147,605.15
  5. Step 5: Solve for x
    x = 117,147,605.15/10,203.12
  6. Step 6: Final answer
    x = 11,481.55

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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.