Home / 19,220.20-28,830.30-9,378.70

Finding the Fourth Proportional to 19,220.20, 28,830.30 and 9,378.70

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Solution

The fourth proportional to 19,220.20, 28,830.30 and 9,378.70 is: 14,068.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,220.20 : 28,830.30 = 9,378.70 : x
  2. Step 2: Convert to fraction form
    19,220.20/28,830.30 = 9,378.70/x
  3. Step 3: Cross multiply
    19,220.20x = 28,830.30 × 9,378.70
  4. Step 4: Simplify right side
    19,220.20x = 270,390,734.61
  5. Step 5: Solve for x
    x = 270,390,734.61/19,220.20
  6. Step 6: Final answer
    x = 14,068.05

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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.