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Finding the Fourth Proportional to 30,290.48, 41,800.24 and 18,966.22

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Solution

The fourth proportional to 30,290.48, 41,800.24 and 18,966.22 is: 26,172.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,290.48 : 41,800.24 = 18,966.22 : x
  2. Step 2: Convert to fraction form
    30,290.48/41,800.24 = 18,966.22/x
  3. Step 3: Cross multiply
    30,290.48x = 41,800.24 × 18,966.22
  4. Step 4: Simplify right side
    30,290.48x = 792,792,547.89
  5. Step 5: Solve for x
    x = 792,792,547.89/30,290.48
  6. Step 6: Final answer
    x = 26,172.99

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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.