Home / 21,025.51-29,007.11-13,470.64

Finding the Fourth Proportional to 21,025.51, 29,007.11 and 13,470.64

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Solution

The fourth proportional to 21,025.51, 29,007.11 and 13,470.64 is: 18,584.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,025.51 : 29,007.11 = 13,470.64 : x
  2. Step 2: Convert to fraction form
    21,025.51/29,007.11 = 13,470.64/x
  3. Step 3: Cross multiply
    21,025.51x = 29,007.11 × 13,470.64
  4. Step 4: Simplify right side
    21,025.51x = 390,744,297.41
  5. Step 5: Solve for x
    x = 390,744,297.41/21,025.51
  6. Step 6: Final answer
    x = 18,584.30

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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.