Home / 15,541.68-21,438.32-10,999.24

Finding the Fourth Proportional to 15,541.68, 21,438.32 and 10,999.24

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Solution

The fourth proportional to 15,541.68, 21,438.32 and 10,999.24 is: 15,172.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,541.68 : 21,438.32 = 10,999.24 : x
  2. Step 2: Convert to fraction form
    15,541.68/21,438.32 = 10,999.24/x
  3. Step 3: Cross multiply
    15,541.68x = 21,438.32 × 10,999.24
  4. Step 4: Simplify right side
    15,541.68x = 235,805,226.88
  5. Step 5: Solve for x
    x = 235,805,226.88/15,541.68
  6. Step 6: Final answer
    x = 15,172.44

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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.