Home / 12,192.31-18,284.74-5,172.19

Finding the Fourth Proportional to 12,192.31, 18,284.74 and 5,172.19

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Solution

The fourth proportional to 12,192.31, 18,284.74 and 5,172.19 is: 7,756.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,192.31 : 18,284.74 = 5,172.19 : x
  2. Step 2: Convert to fraction form
    12,192.31/18,284.74 = 5,172.19/x
  3. Step 3: Cross multiply
    12,192.31x = 18,284.74 × 5,172.19
  4. Step 4: Simplify right side
    12,192.31x = 94,572,149.38
  5. Step 5: Solve for x
    x = 94,572,149.38/12,192.31
  6. Step 6: Final answer
    x = 7,756.70

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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.