Home / 30,659.58-42,342.35-21,124.26

Finding the Fourth Proportional to 30,659.58, 42,342.35 and 21,124.26

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Solution

The fourth proportional to 30,659.58, 42,342.35 and 21,124.26 is: 29,173.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,659.58 : 42,342.35 = 21,124.26 : x
  2. Step 2: Convert to fraction form
    30,659.58/42,342.35 = 21,124.26/x
  3. Step 3: Cross multiply
    30,659.58x = 42,342.35 × 21,124.26
  4. Step 4: Simplify right side
    30,659.58x = 894,450,704.79
  5. Step 5: Solve for x
    x = 894,450,704.79/30,659.58
  6. Step 6: Final answer
    x = 29,173.61

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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.