Home / 13,210.59-19,816.47-5,418.75

Finding the Fourth Proportional to 13,210.59, 19,816.47 and 5,418.75

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Solution

The fourth proportional to 13,210.59, 19,816.47 and 5,418.75 is: 8,128.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,210.59 : 19,816.47 = 5,418.75 : x
  2. Step 2: Convert to fraction form
    13,210.59/19,816.47 = 5,418.75/x
  3. Step 3: Cross multiply
    13,210.59x = 19,816.47 × 5,418.75
  4. Step 4: Simplify right side
    13,210.59x = 107,380,496.81
  5. Step 5: Solve for x
    x = 107,380,496.81/13,210.59
  6. Step 6: Final answer
    x = 8,128.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.