Home / 10,621.02-15,916.38-7,825.71

Finding the Fourth Proportional to 10,621.02, 15,916.38 and 7,825.71

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Solution

The fourth proportional to 10,621.02, 15,916.38 and 7,825.71 is: 11,727.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,621.02 : 15,916.38 = 7,825.71 : x
  2. Step 2: Convert to fraction form
    10,621.02/15,916.38 = 7,825.71/x
  3. Step 3: Cross multiply
    10,621.02x = 15,916.38 × 7,825.71
  4. Step 4: Simplify right side
    10,621.02x = 124,556,974.13
  5. Step 5: Solve for x
    x = 124,556,974.13/10,621.02
  6. Step 6: Final answer
    x = 11,727.40

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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.