Home / 30,220.66-41,687.13-18,870.45

Finding the Fourth Proportional to 30,220.66, 41,687.13 and 18,870.45

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Solution

The fourth proportional to 30,220.66, 41,687.13 and 18,870.45 is: 26,030.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,220.66 : 41,687.13 = 18,870.45 : x
  2. Step 2: Convert to fraction form
    30,220.66/41,687.13 = 18,870.45/x
  3. Step 3: Cross multiply
    30,220.66x = 41,687.13 × 18,870.45
  4. Step 4: Simplify right side
    30,220.66x = 786,654,845.27
  5. Step 5: Solve for x
    x = 786,654,845.27/30,220.66
  6. Step 6: Final answer
    x = 26,030.37

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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.