Home / 18,210.21-25,118.80-11,124.33

Finding the Fourth Proportional to 18,210.21, 25,118.80 and 11,124.33

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Solution

The fourth proportional to 18,210.21, 25,118.80 and 11,124.33 is: 15,344.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,210.21 : 25,118.80 = 11,124.33 : x
  2. Step 2: Convert to fraction form
    18,210.21/25,118.80 = 11,124.33/x
  3. Step 3: Cross multiply
    18,210.21x = 25,118.80 × 11,124.33
  4. Step 4: Simplify right side
    18,210.21x = 279,429,820.40
  5. Step 5: Solve for x
    x = 279,429,820.40/18,210.21
  6. Step 6: Final answer
    x = 15,344.68

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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.