Home / 28,361.02-39,137.82-15,785.77

Finding the Fourth Proportional to 28,361.02, 39,137.82 and 15,785.77

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Solution

The fourth proportional to 28,361.02, 39,137.82 and 15,785.77 is: 21,784.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,361.02 : 39,137.82 = 15,785.77 : x
  2. Step 2: Convert to fraction form
    28,361.02/39,137.82 = 15,785.77/x
  3. Step 3: Cross multiply
    28,361.02x = 39,137.82 × 15,785.77
  4. Step 4: Simplify right side
    28,361.02x = 617,820,429.13
  5. Step 5: Solve for x
    x = 617,820,429.13/28,361.02
  6. Step 6: Final answer
    x = 21,784.14

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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.