Home / 13,658.59-18,846.16-7,690.51

Finding the Fourth Proportional to 13,658.59, 18,846.16 and 7,690.51

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Solution

The fourth proportional to 13,658.59, 18,846.16 and 7,690.51 is: 10,611.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,658.59 : 18,846.16 = 7,690.51 : x
  2. Step 2: Convert to fraction form
    13,658.59/18,846.16 = 7,690.51/x
  3. Step 3: Cross multiply
    13,658.59x = 18,846.16 × 7,690.51
  4. Step 4: Simplify right side
    13,658.59x = 144,936,581.94
  5. Step 5: Solve for x
    x = 144,936,581.94/13,658.59
  6. Step 6: Final answer
    x = 10,611.39

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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.