Home / 13,125.64-18,108.84-8,412.52

Finding the Fourth Proportional to 13,125.64, 18,108.84 and 8,412.52

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Solution

The fourth proportional to 13,125.64, 18,108.84 and 8,412.52 is: 11,606.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,125.64 : 18,108.84 = 8,412.52 : x
  2. Step 2: Convert to fraction form
    13,125.64/18,108.84 = 8,412.52/x
  3. Step 3: Cross multiply
    13,125.64x = 18,108.84 × 8,412.52
  4. Step 4: Simplify right side
    13,125.64x = 152,340,978.68
  5. Step 5: Solve for x
    x = 152,340,978.68/13,125.64
  6. Step 6: Final answer
    x = 11,606.37

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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.