Home / 13,415.19-20,116.31-5,621.91

Finding the Fourth Proportional to 13,415.19, 20,116.31 and 5,621.91

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Solution

The fourth proportional to 13,415.19, 20,116.31 and 5,621.91 is: 8,430.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,415.19 : 20,116.31 = 5,621.91 : x
  2. Step 2: Convert to fraction form
    13,415.19/20,116.31 = 5,621.91/x
  3. Step 3: Cross multiply
    13,415.19x = 20,116.31 × 5,621.91
  4. Step 4: Simplify right side
    13,415.19x = 113,092,056.24
  5. Step 5: Solve for x
    x = 113,092,056.24/13,415.19
  6. Step 6: Final answer
    x = 8,430.15

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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.