Home / 18,860.63-28,294.58-7,172.93

Finding the Fourth Proportional to 18,860.63, 28,294.58 and 7,172.93

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Solution

The fourth proportional to 18,860.63, 28,294.58 and 7,172.93 is: 10,760.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,860.63 : 28,294.58 = 7,172.93 : x
  2. Step 2: Convert to fraction form
    18,860.63/28,294.58 = 7,172.93/x
  3. Step 3: Cross multiply
    18,860.63x = 28,294.58 × 7,172.93
  4. Step 4: Simplify right side
    18,860.63x = 202,955,041.72
  5. Step 5: Solve for x
    x = 202,955,041.72/18,860.63
  6. Step 6: Final answer
    x = 10,760.78

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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.