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Finding the Fourth Proportional to 28,807, 39,737.54 and 16,868.04

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Solution

The fourth proportional to 28,807, 39,737.54 and 16,868.04 is: 23,268.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,807 : 39,737.54 = 16,868.04 : x
  2. Step 2: Convert to fraction form
    28,807/39,737.54 = 16,868.04/x
  3. Step 3: Cross multiply
    28,807x = 39,737.54 × 16,868.04
  4. Step 4: Simplify right side
    28,807x = 670,294,414.22
  5. Step 5: Solve for x
    x = 670,294,414.22/28,807
  6. Step 6: Final answer
    x = 23,268.46

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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.