Home / 18,977.78-28,466.60-7,282.80

Finding the Fourth Proportional to 18,977.78, 28,466.60 and 7,282.80

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Solution

The fourth proportional to 18,977.78, 28,466.60 and 7,282.80 is: 10,924.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,977.78 : 28,466.60 = 7,282.80 : x
  2. Step 2: Convert to fraction form
    18,977.78/28,466.60 = 7,282.80/x
  3. Step 3: Cross multiply
    18,977.78x = 28,466.60 × 7,282.80
  4. Step 4: Simplify right side
    18,977.78x = 207,316,518.07
  5. Step 5: Solve for x
    x = 207,316,518.07/18,977.78
  6. Step 6: Final answer
    x = 10,924.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.