Home / 30,220.16-41,686.44-18,869.95

Finding the Fourth Proportional to 30,220.16, 41,686.44 and 18,869.95

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Solution

The fourth proportional to 30,220.16, 41,686.44 and 18,869.95 is: 26,029.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,220.16 : 41,686.44 = 18,869.95 : x
  2. Step 2: Convert to fraction form
    30,220.16/41,686.44 = 18,869.95/x
  3. Step 3: Cross multiply
    30,220.16x = 41,686.44 × 18,869.95
  4. Step 4: Simplify right side
    30,220.16x = 786,620,981.44
  5. Step 5: Solve for x
    x = 786,620,981.44/30,220.16
  6. Step 6: Final answer
    x = 26,029.68

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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.