Home / 28,283.08-38,990.10-19,873.48

Finding the Fourth Proportional to 28,283.08, 38,990.10 and 19,873.48

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Solution

The fourth proportional to 28,283.08, 38,990.10 and 19,873.48 is: 27,396.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,283.08 : 38,990.10 = 19,873.48 : x
  2. Step 2: Convert to fraction form
    28,283.08/38,990.10 = 19,873.48/x
  3. Step 3: Cross multiply
    28,283.08x = 38,990.10 × 19,873.48
  4. Step 4: Simplify right side
    28,283.08x = 774,868,972.55
  5. Step 5: Solve for x
    x = 774,868,972.55/28,283.08
  6. Step 6: Final answer
    x = 27,396.91

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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.