Home / 13,615.19-20,422.71-5,300.99

Finding the Fourth Proportional to 13,615.19, 20,422.71 and 5,300.99

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Solution

The fourth proportional to 13,615.19, 20,422.71 and 5,300.99 is: 7,951.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,615.19 : 20,422.71 = 5,300.99 : x
  2. Step 2: Convert to fraction form
    13,615.19/20,422.71 = 5,300.99/x
  3. Step 3: Cross multiply
    13,615.19x = 20,422.71 × 5,300.99
  4. Step 4: Simplify right side
    13,615.19x = 108,260,581.48
  5. Step 5: Solve for x
    x = 108,260,581.48/13,615.19
  6. Step 6: Final answer
    x = 7,951.46

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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.