Home / 13,585.19-20,378.48-4,820.79

Finding the Fourth Proportional to 13,585.19, 20,378.48 and 4,820.79

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Solution

The fourth proportional to 13,585.19, 20,378.48 and 4,820.79 is: 7,231.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,585.19 : 20,378.48 = 4,820.79 : x
  2. Step 2: Convert to fraction form
    13,585.19/20,378.48 = 4,820.79/x
  3. Step 3: Cross multiply
    13,585.19x = 20,378.48 × 4,820.79
  4. Step 4: Simplify right side
    13,585.19x = 98,240,348.50
  5. Step 5: Solve for x
    x = 98,240,348.50/13,585.19
  6. Step 6: Final answer
    x = 7,231.43

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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.