Home / 28,250.10-38,990.48-18,690.17

Finding the Fourth Proportional to 28,250.10, 38,990.48 and 18,690.17

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Solution

The fourth proportional to 28,250.10, 38,990.48 and 18,690.17 is: 25,795.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,250.10 : 38,990.48 = 18,690.17 : x
  2. Step 2: Convert to fraction form
    28,250.10/38,990.48 = 18,690.17/x
  3. Step 3: Cross multiply
    28,250.10x = 38,990.48 × 18,690.17
  4. Step 4: Simplify right side
    28,250.10x = 728,738,411.18
  5. Step 5: Solve for x
    x = 728,738,411.18/28,250.10
  6. Step 6: Final answer
    x = 25,795.96

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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.