Home / 28,395.47-42,578.40-10,611.51

Finding the Fourth Proportional to 28,395.47, 42,578.40 and 10,611.51

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Solution

The fourth proportional to 28,395.47, 42,578.40 and 10,611.51 is: 15,911.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,395.47 : 42,578.40 = 10,611.51 : x
  2. Step 2: Convert to fraction form
    28,395.47/42,578.40 = 10,611.51/x
  3. Step 3: Cross multiply
    28,395.47x = 42,578.40 × 10,611.51
  4. Step 4: Simplify right side
    28,395.47x = 451,821,064.33
  5. Step 5: Solve for x
    x = 451,821,064.33/28,395.47
  6. Step 6: Final answer
    x = 15,911.73

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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.