Home / 15,813.83-21,782.16-11,025.20

Finding the Fourth Proportional to 15,813.83, 21,782.16 and 11,025.20

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Solution

The fourth proportional to 15,813.83, 21,782.16 and 11,025.20 is: 15,186.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,813.83 : 21,782.16 = 11,025.20 : x
  2. Step 2: Convert to fraction form
    15,813.83/21,782.16 = 11,025.20/x
  3. Step 3: Cross multiply
    15,813.83x = 21,782.16 × 11,025.20
  4. Step 4: Simplify right side
    15,813.83x = 240,152,670.43
  5. Step 5: Solve for x
    x = 240,152,670.43/15,813.83
  6. Step 6: Final answer
    x = 15,186.24

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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.