Home / 21,988.77-32,888.88-20,393.34

Finding the Fourth Proportional to 21,988.77, 32,888.88 and 20,393.34

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Solution

The fourth proportional to 21,988.77, 32,888.88 and 20,393.34 is: 30,502.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,988.77 : 32,888.88 = 20,393.34 : x
  2. Step 2: Convert to fraction form
    21,988.77/32,888.88 = 20,393.34/x
  3. Step 3: Cross multiply
    21,988.77x = 32,888.88 × 20,393.34
  4. Step 4: Simplify right side
    21,988.77x = 670,714,112.06
  5. Step 5: Solve for x
    x = 670,714,112.06/21,988.77
  6. Step 6: Final answer
    x = 30,502.58

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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.