Home / 13,478.32-20,214.69-3,615.25

Finding the Fourth Proportional to 13,478.32, 20,214.69 and 3,615.25

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Solution

The fourth proportional to 13,478.32, 20,214.69 and 3,615.25 is: 5,422.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,478.32 : 20,214.69 = 3,615.25 : x
  2. Step 2: Convert to fraction form
    13,478.32/20,214.69 = 3,615.25/x
  3. Step 3: Cross multiply
    13,478.32x = 20,214.69 × 3,615.25
  4. Step 4: Simplify right side
    13,478.32x = 73,081,158.02
  5. Step 5: Solve for x
    x = 73,081,158.02/13,478.32
  6. Step 6: Final answer
    x = 5,422.13

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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.