Home / 21,983.58-32,968.35-7,188.51

Finding the Fourth Proportional to 21,983.58, 32,968.35 and 7,188.51

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Solution

The fourth proportional to 21,983.58, 32,968.35 and 7,188.51 is: 10,780.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,983.58 : 32,968.35 = 7,188.51 : x
  2. Step 2: Convert to fraction form
    21,983.58/32,968.35 = 7,188.51/x
  3. Step 3: Cross multiply
    21,983.58x = 32,968.35 × 7,188.51
  4. Step 4: Simplify right side
    21,983.58x = 236,993,313.66
  5. Step 5: Solve for x
    x = 236,993,313.66/21,983.58
  6. Step 6: Final answer
    x = 10,780.47

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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.