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Finding the Fourth Proportional to 19,221.98, 28,807.85 and 9,854.06

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Solution

The fourth proportional to 19,221.98, 28,807.85 and 9,854.06 is: 14,768.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,221.98 : 28,807.85 = 9,854.06 : x
  2. Step 2: Convert to fraction form
    19,221.98/28,807.85 = 9,854.06/x
  3. Step 3: Cross multiply
    19,221.98x = 28,807.85 × 9,854.06
  4. Step 4: Simplify right side
    19,221.98x = 283,874,282.37
  5. Step 5: Solve for x
    x = 283,874,282.37/19,221.98
  6. Step 6: Final answer
    x = 14,768.21

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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.