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Finding the Fourth Proportional to 11,075.84, 16,642.48 and 8,328.40

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Solution

The fourth proportional to 11,075.84, 16,642.48 and 8,328.40 is: 12,514.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,075.84 : 16,642.48 = 8,328.40 : x
  2. Step 2: Convert to fraction form
    11,075.84/16,642.48 = 8,328.40/x
  3. Step 3: Cross multiply
    11,075.84x = 16,642.48 × 8,328.40
  4. Step 4: Simplify right side
    11,075.84x = 138,605,230.43
  5. Step 5: Solve for x
    x = 138,605,230.43/11,075.84
  6. Step 6: Final answer
    x = 12,514.20

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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.