Home / 18,951.12-28,363.44-14,259.72

Finding the Fourth Proportional to 18,951.12, 28,363.44 and 14,259.72

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Solution

The fourth proportional to 18,951.12, 28,363.44 and 14,259.72 is: 21,342.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,951.12 : 28,363.44 = 14,259.72 : x
  2. Step 2: Convert to fraction form
    18,951.12/28,363.44 = 14,259.72/x
  3. Step 3: Cross multiply
    18,951.12x = 28,363.44 × 14,259.72
  4. Step 4: Simplify right side
    18,951.12x = 404,454,712.64
  5. Step 5: Solve for x
    x = 404,454,712.64/18,951.12
  6. Step 6: Final answer
    x = 21,342.00

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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.