Home / 28,429.60-39,242.64-17,105.44

Finding the Fourth Proportional to 28,429.60, 39,242.64 and 17,105.44

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Solution

The fourth proportional to 28,429.60, 39,242.64 and 17,105.44 is: 23,611.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,429.60 : 39,242.64 = 17,105.44 : x
  2. Step 2: Convert to fraction form
    28,429.60/39,242.64 = 17,105.44/x
  3. Step 3: Cross multiply
    28,429.60x = 39,242.64 × 17,105.44
  4. Step 4: Simplify right side
    28,429.60x = 671,262,623.96
  5. Step 5: Solve for x
    x = 671,262,623.96/28,429.60
  6. Step 6: Final answer
    x = 23,611.40

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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.