Home / 30,307.56-41,783.66-21,220.70

Finding the Fourth Proportional to 30,307.56, 41,783.66 and 21,220.70

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Solution

The fourth proportional to 30,307.56, 41,783.66 and 21,220.70 is: 29,256.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,307.56 : 41,783.66 = 21,220.70 : x
  2. Step 2: Convert to fraction form
    30,307.56/41,783.66 = 21,220.70/x
  3. Step 3: Cross multiply
    30,307.56x = 41,783.66 × 21,220.70
  4. Step 4: Simplify right side
    30,307.56x = 886,678,435.01
  5. Step 5: Solve for x
    x = 886,678,435.01/30,307.56
  6. Step 6: Final answer
    x = 29,256.02

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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.