Home / 15,804.96-21,785.72-12,442.45

Finding the Fourth Proportional to 15,804.96, 21,785.72 and 12,442.45

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Solution

The fourth proportional to 15,804.96, 21,785.72 and 12,442.45 is: 17,150.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,804.96 : 21,785.72 = 12,442.45 : x
  2. Step 2: Convert to fraction form
    15,804.96/21,785.72 = 12,442.45/x
  3. Step 3: Cross multiply
    15,804.96x = 21,785.72 × 12,442.45
  4. Step 4: Simplify right side
    15,804.96x = 271,067,731.81
  5. Step 5: Solve for x
    x = 271,067,731.81/15,804.96
  6. Step 6: Final answer
    x = 17,150.80

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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.