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Finding the Fourth Proportional to 19,303.60, 28,900.79 and 12,266.16

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Solution

The fourth proportional to 19,303.60, 28,900.79 and 12,266.16 is: 18,364.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,303.60 : 28,900.79 = 12,266.16 : x
  2. Step 2: Convert to fraction form
    19,303.60/28,900.79 = 12,266.16/x
  3. Step 3: Cross multiply
    19,303.60x = 28,900.79 × 12,266.16
  4. Step 4: Simplify right side
    19,303.60x = 354,501,714.27
  5. Step 5: Solve for x
    x = 354,501,714.27/19,303.60
  6. Step 6: Final answer
    x = 18,364.54

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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.