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Finding the Fourth Proportional to 14,064.94, 19,409.36 and 8,400.95

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Solution

The fourth proportional to 14,064.94, 19,409.36 and 8,400.95 is: 11,593.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,064.94 : 19,409.36 = 8,400.95 : x
  2. Step 2: Convert to fraction form
    14,064.94/19,409.36 = 8,400.95/x
  3. Step 3: Cross multiply
    14,064.94x = 19,409.36 × 8,400.95
  4. Step 4: Simplify right side
    14,064.94x = 163,056,996.63
  5. Step 5: Solve for x
    x = 163,056,996.63/14,064.94
  6. Step 6: Final answer
    x = 11,593.15

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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.