Home / 15,341.68-21,172.14-8,972.38

Finding the Fourth Proportional to 15,341.68, 21,172.14 and 8,972.38

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Solution

The fourth proportional to 15,341.68, 21,172.14 and 8,972.38 is: 12,382.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,341.68 : 21,172.14 = 8,972.38 : x
  2. Step 2: Convert to fraction form
    15,341.68/21,172.14 = 8,972.38/x
  3. Step 3: Cross multiply
    15,341.68x = 21,172.14 × 8,972.38
  4. Step 4: Simplify right side
    15,341.68x = 189,964,485.49
  5. Step 5: Solve for x
    x = 189,964,485.49/15,341.68
  6. Step 6: Final answer
    x = 12,382.25

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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.