Home / 13,653.72-20,340.56-12,804.91

Finding the Fourth Proportional to 13,653.72, 20,340.56 and 12,804.91

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Solution

The fourth proportional to 13,653.72, 20,340.56 and 12,804.91 is: 19,076.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,653.72 : 20,340.56 = 12,804.91 : x
  2. Step 2: Convert to fraction form
    13,653.72/20,340.56 = 12,804.91/x
  3. Step 3: Cross multiply
    13,653.72x = 20,340.56 × 12,804.91
  4. Step 4: Simplify right side
    13,653.72x = 260,459,021.31
  5. Step 5: Solve for x
    x = 260,459,021.31/13,653.72
  6. Step 6: Final answer
    x = 19,076.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.