Home / 22,220.06-30,667.02-12,786.80

Finding the Fourth Proportional to 22,220.06, 30,667.02 and 12,786.80

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Solution

The fourth proportional to 22,220.06, 30,667.02 and 12,786.80 is: 17,647.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,220.06 : 30,667.02 = 12,786.80 : x
  2. Step 2: Convert to fraction form
    22,220.06/30,667.02 = 12,786.80/x
  3. Step 3: Cross multiply
    22,220.06x = 30,667.02 × 12,786.80
  4. Step 4: Simplify right side
    22,220.06x = 392,133,051.34
  5. Step 5: Solve for x
    x = 392,133,051.34/22,220.06
  6. Step 6: Final answer
    x = 17,647.70

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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.