Home / 13,959.14-20,938.68-3,570.86

Finding the Fourth Proportional to 13,959.14, 20,938.68 and 3,570.86

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Solution

The fourth proportional to 13,959.14, 20,938.68 and 3,570.86 is: 5,356.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,959.14 : 20,938.68 = 3,570.86 : x
  2. Step 2: Convert to fraction form
    13,959.14/20,938.68 = 3,570.86/x
  3. Step 3: Cross multiply
    13,959.14x = 20,938.68 × 3,570.86
  4. Step 4: Simplify right side
    13,959.14x = 74,769,094.86
  5. Step 5: Solve for x
    x = 74,769,094.86/13,959.14
  6. Step 6: Final answer
    x = 5,356.28

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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.