Home / 19,230.20-28,845.30-11,881.40

Finding the Fourth Proportional to 19,230.20, 28,845.30 and 11,881.40

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Solution

The fourth proportional to 19,230.20, 28,845.30 and 11,881.40 is: 17,822.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,230.20 : 28,845.30 = 11,881.40 : x
  2. Step 2: Convert to fraction form
    19,230.20/28,845.30 = 11,881.40/x
  3. Step 3: Cross multiply
    19,230.20x = 28,845.30 × 11,881.40
  4. Step 4: Simplify right side
    19,230.20x = 342,722,547.42
  5. Step 5: Solve for x
    x = 342,722,547.42/19,230.20
  6. Step 6: Final answer
    x = 17,822.10

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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.