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Finding the Fourth Proportional to 14,159.88, 19,539.18 and 8,855.28

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Solution

The fourth proportional to 14,159.88, 19,539.18 and 8,855.28 is: 12,219.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,159.88 : 19,539.18 = 8,855.28 : x
  2. Step 2: Convert to fraction form
    14,159.88/19,539.18 = 8,855.28/x
  3. Step 3: Cross multiply
    14,159.88x = 19,539.18 × 8,855.28
  4. Step 4: Simplify right side
    14,159.88x = 173,024,909.87
  5. Step 5: Solve for x
    x = 173,024,909.87/14,159.88
  6. Step 6: Final answer
    x = 12,219.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.