Home / 12,445.15-17,170.63-7,405.33

Finding the Fourth Proportional to 12,445.15, 17,170.63 and 7,405.33

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Solution

The fourth proportional to 12,445.15, 17,170.63 and 7,405.33 is: 10,217.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,445.15 : 17,170.63 = 7,405.33 : x
  2. Step 2: Convert to fraction form
    12,445.15/17,170.63 = 7,405.33/x
  3. Step 3: Cross multiply
    12,445.15x = 17,170.63 × 7,405.33
  4. Step 4: Simplify right side
    12,445.15x = 127,154,181.46
  5. Step 5: Solve for x
    x = 127,154,181.46/12,445.15
  6. Step 6: Final answer
    x = 10,217.17

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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.