Home / 30,153.74-41,616.95-18,218.79

Finding the Fourth Proportional to 30,153.74, 41,616.95 and 18,218.79

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Solution

The fourth proportional to 30,153.74, 41,616.95 and 18,218.79 is: 25,144.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,153.74 : 41,616.95 = 18,218.79 : x
  2. Step 2: Convert to fraction form
    30,153.74/41,616.95 = 18,218.79/x
  3. Step 3: Cross multiply
    30,153.74x = 41,616.95 × 18,218.79
  4. Step 4: Simplify right side
    30,153.74x = 758,210,381.40
  5. Step 5: Solve for x
    x = 758,210,381.40/30,153.74
  6. Step 6: Final answer
    x = 25,144.82

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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.