Home / 19,916.78-27,484.20-10,964.10

Finding the Fourth Proportional to 19,916.78, 27,484.20 and 10,964.10

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Solution

The fourth proportional to 19,916.78, 27,484.20 and 10,964.10 is: 15,129.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,916.78 : 27,484.20 = 10,964.10 : x
  2. Step 2: Convert to fraction form
    19,916.78/27,484.20 = 10,964.10/x
  3. Step 3: Cross multiply
    19,916.78x = 27,484.20 × 10,964.10
  4. Step 4: Simplify right side
    19,916.78x = 301,339,517.22
  5. Step 5: Solve for x
    x = 301,339,517.22/19,916.78
  6. Step 6: Final answer
    x = 15,129.93

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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.