Home / 28,807.20-39,755.48-16,871.45

Finding the Fourth Proportional to 28,807.20, 39,755.48 and 16,871.45

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Solution

The fourth proportional to 28,807.20, 39,755.48 and 16,871.45 is: 23,283.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,807.20 : 39,755.48 = 16,871.45 : x
  2. Step 2: Convert to fraction form
    28,807.20/39,755.48 = 16,871.45/x
  3. Step 3: Cross multiply
    28,807.20x = 39,755.48 × 16,871.45
  4. Step 4: Simplify right side
    28,807.20x = 670,732,309.91
  5. Step 5: Solve for x
    x = 670,732,309.91/28,807.20
  6. Step 6: Final answer
    x = 23,283.50

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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.