Home / 21,989.19-32,995.35-12,001.08

Finding the Fourth Proportional to 21,989.19, 32,995.35 and 12,001.08

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Solution

The fourth proportional to 21,989.19, 32,995.35 and 12,001.08 is: 18,007.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,989.19 : 32,995.35 = 12,001.08 : x
  2. Step 2: Convert to fraction form
    21,989.19/32,995.35 = 12,001.08/x
  3. Step 3: Cross multiply
    21,989.19x = 32,995.35 × 12,001.08
  4. Step 4: Simplify right side
    21,989.19x = 395,979,834.98
  5. Step 5: Solve for x
    x = 395,979,834.98/21,989.19
  6. Step 6: Final answer
    x = 18,007.93

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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.