Home / 19,008.18-28,490.40-11,993.40

Finding the Fourth Proportional to 19,008.18, 28,490.40 and 11,993.40

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Solution

The fourth proportional to 19,008.18, 28,490.40 and 11,993.40 is: 17,976.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,008.18 : 28,490.40 = 11,993.40 : x
  2. Step 2: Convert to fraction form
    19,008.18/28,490.40 = 11,993.40/x
  3. Step 3: Cross multiply
    19,008.18x = 28,490.40 × 11,993.40
  4. Step 4: Simplify right side
    19,008.18x = 341,696,763.36
  5. Step 5: Solve for x
    x = 341,696,763.36/19,008.18
  6. Step 6: Final answer
    x = 17,976.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.