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Finding the Fourth Proportional to 18,854.74, 28,282.08 and 4,814.76

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Solution

The fourth proportional to 18,854.74, 28,282.08 and 4,814.76 is: 7,222.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,854.74 : 28,282.08 = 4,814.76 : x
  2. Step 2: Convert to fraction form
    18,854.74/28,282.08 = 4,814.76/x
  3. Step 3: Cross multiply
    18,854.74x = 28,282.08 × 4,814.76
  4. Step 4: Simplify right side
    18,854.74x = 136,171,427.50
  5. Step 5: Solve for x
    x = 136,171,427.50/18,854.74
  6. Step 6: Final answer
    x = 7,222.13

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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.