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Finding the Fourth Proportional to 12,798.80, 19,196.94 and 4,477.28

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Solution

The fourth proportional to 12,798.80, 19,196.94 and 4,477.28 is: 6,715.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,798.80 : 19,196.94 = 4,477.28 : x
  2. Step 2: Convert to fraction form
    12,798.80/19,196.94 = 4,477.28/x
  3. Step 3: Cross multiply
    12,798.80x = 19,196.94 × 4,477.28
  4. Step 4: Simplify right side
    12,798.80x = 85,950,075.52
  5. Step 5: Solve for x
    x = 85,950,075.52/12,798.80
  6. Step 6: Final answer
    x = 6,715.48

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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.