Home / 28,168.84-38,899.34-18,114.74

Finding the Fourth Proportional to 28,168.84, 38,899.34 and 18,114.74

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Solution

The fourth proportional to 28,168.84, 38,899.34 and 18,114.74 is: 25,015.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,168.84 : 38,899.34 = 18,114.74 : x
  2. Step 2: Convert to fraction form
    28,168.84/38,899.34 = 18,114.74/x
  3. Step 3: Cross multiply
    28,168.84x = 38,899.34 × 18,114.74
  4. Step 4: Simplify right side
    28,168.84x = 704,651,359.00
  5. Step 5: Solve for x
    x = 704,651,359.00/28,168.84
  6. Step 6: Final answer
    x = 25,015.28

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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.