Home / 15,462.63-21,338.43-8,389.05

Finding the Fourth Proportional to 15,462.63, 21,338.43 and 8,389.05

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Solution

The fourth proportional to 15,462.63, 21,338.43 and 8,389.05 is: 11,576.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,462.63 : 21,338.43 = 8,389.05 : x
  2. Step 2: Convert to fraction form
    15,462.63/21,338.43 = 8,389.05/x
  3. Step 3: Cross multiply
    15,462.63x = 21,338.43 × 8,389.05
  4. Step 4: Simplify right side
    15,462.63x = 179,009,007.55
  5. Step 5: Solve for x
    x = 179,009,007.55/15,462.63
  6. Step 6: Final answer
    x = 11,576.88

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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.