Home / 20,563.59-28,382.25-13,019.98

Finding the Fourth Proportional to 20,563.59, 28,382.25 and 13,019.98

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Solution

The fourth proportional to 20,563.59, 28,382.25 and 13,019.98 is: 17,970.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,563.59 : 28,382.25 = 13,019.98 : x
  2. Step 2: Convert to fraction form
    20,563.59/28,382.25 = 13,019.98/x
  3. Step 3: Cross multiply
    20,563.59x = 28,382.25 × 13,019.98
  4. Step 4: Simplify right side
    20,563.59x = 369,536,327.36
  5. Step 5: Solve for x
    x = 369,536,327.36/20,563.59
  6. Step 6: Final answer
    x = 17,970.42

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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.