Home / 14,905.71-20,557.88-13,109.33

Finding the Fourth Proportional to 14,905.71, 20,557.88 and 13,109.33

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Solution

The fourth proportional to 14,905.71, 20,557.88 and 13,109.33 is: 18,080.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,905.71 : 20,557.88 = 13,109.33 : x
  2. Step 2: Convert to fraction form
    14,905.71/20,557.88 = 13,109.33/x
  3. Step 3: Cross multiply
    14,905.71x = 20,557.88 × 13,109.33
  4. Step 4: Simplify right side
    14,905.71x = 269,499,864.68
  5. Step 5: Solve for x
    x = 269,499,864.68/14,905.71
  6. Step 6: Final answer
    x = 18,080.31

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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.