Home / 13,211.08-19,819.21-4,891.16

Finding the Fourth Proportional to 13,211.08, 19,819.21 and 4,891.16

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Solution

The fourth proportional to 13,211.08, 19,819.21 and 4,891.16 is: 7,337.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,211.08 : 19,819.21 = 4,891.16 : x
  2. Step 2: Convert to fraction form
    13,211.08/19,819.21 = 4,891.16/x
  3. Step 3: Cross multiply
    13,211.08x = 19,819.21 × 4,891.16
  4. Step 4: Simplify right side
    13,211.08x = 96,938,927.18
  5. Step 5: Solve for x
    x = 96,938,927.18/13,211.08
  6. Step 6: Final answer
    x = 7,337.70

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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.