Home / 13,478.69-20,215.25-3,615.63

Finding the Fourth Proportional to 13,478.69, 20,215.25 and 3,615.63

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Solution

The fourth proportional to 13,478.69, 20,215.25 and 3,615.63 is: 5,422.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,478.69 : 20,215.25 = 3,615.63 : x
  2. Step 2: Convert to fraction form
    13,478.69/20,215.25 = 3,615.63/x
  3. Step 3: Cross multiply
    13,478.69x = 20,215.25 × 3,615.63
  4. Step 4: Simplify right side
    13,478.69x = 73,090,864.36
  5. Step 5: Solve for x
    x = 73,090,864.36/13,478.69
  6. Step 6: Final answer
    x = 5,422.70

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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.