Home / 13,656.70-18,846.22-7,690.29

Finding the Fourth Proportional to 13,656.70, 18,846.22 and 7,690.29

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Solution

The fourth proportional to 13,656.70, 18,846.22 and 7,690.29 is: 10,612.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,656.70 : 18,846.22 = 7,690.29 : x
  2. Step 2: Convert to fraction form
    13,656.70/18,846.22 = 7,690.29/x
  3. Step 3: Cross multiply
    13,656.70x = 18,846.22 × 7,690.29
  4. Step 4: Simplify right side
    13,656.70x = 144,932,821.72
  5. Step 5: Solve for x
    x = 144,932,821.72/13,656.70
  6. Step 6: Final answer
    x = 10,612.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.