Home / 28,172.76-42,265.62-9,455.28

Finding the Fourth Proportional to 28,172.76, 42,265.62 and 9,455.28

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Solution

The fourth proportional to 28,172.76, 42,265.62 and 9,455.28 is: 14,185.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,172.76 : 42,265.62 = 9,455.28 : x
  2. Step 2: Convert to fraction form
    28,172.76/42,265.62 = 9,455.28/x
  3. Step 3: Cross multiply
    28,172.76x = 42,265.62 × 9,455.28
  4. Step 4: Simplify right side
    28,172.76x = 399,633,271.47
  5. Step 5: Solve for x
    x = 399,633,271.47/28,172.76
  6. Step 6: Final answer
    x = 14,185.09

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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.