Home / 28,807.96-39,760.16-16,870.60

Finding the Fourth Proportional to 28,807.96, 39,760.16 and 16,870.60

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Solution

The fourth proportional to 28,807.96, 39,760.16 and 16,870.60 is: 23,284.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,807.96 : 39,760.16 = 16,870.60 : x
  2. Step 2: Convert to fraction form
    28,807.96/39,760.16 = 16,870.60/x
  3. Step 3: Cross multiply
    28,807.96x = 39,760.16 × 16,870.60
  4. Step 4: Simplify right side
    28,807.96x = 670,777,755.30
  5. Step 5: Solve for x
    x = 670,777,755.30/28,807.96
  6. Step 6: Final answer
    x = 23,284.46

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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.