Home / 18,710.83-25,820.27-11,153.26

Finding the Fourth Proportional to 18,710.83, 25,820.27 and 11,153.26

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Solution

The fourth proportional to 18,710.83, 25,820.27 and 11,153.26 is: 15,391.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,710.83 : 25,820.27 = 11,153.26 : x
  2. Step 2: Convert to fraction form
    18,710.83/25,820.27 = 11,153.26/x
  3. Step 3: Cross multiply
    18,710.83x = 25,820.27 × 11,153.26
  4. Step 4: Simplify right side
    18,710.83x = 287,980,202.91
  5. Step 5: Solve for x
    x = 287,980,202.91/18,710.83
  6. Step 6: Final answer
    x = 15,391.10

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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.