Home / 10,380.81-15,579.52-5,453.36

Finding the Fourth Proportional to 10,380.81, 15,579.52 and 5,453.36

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Solution

The fourth proportional to 10,380.81, 15,579.52 and 5,453.36 is: 8,184.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,380.81 : 15,579.52 = 5,453.36 : x
  2. Step 2: Convert to fraction form
    10,380.81/15,579.52 = 5,453.36/x
  3. Step 3: Cross multiply
    10,380.81x = 15,579.52 × 5,453.36
  4. Step 4: Simplify right side
    10,380.81x = 84,960,731.19
  5. Step 5: Solve for x
    x = 84,960,731.19/10,380.81
  6. Step 6: Final answer
    x = 8,184.40

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1.5x scale

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.