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Finding the Fourth Proportional to 14,646.84, 21,978.90 and 5,419.32

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Solution

The fourth proportional to 14,646.84, 21,978.90 and 5,419.32 is: 8,132.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,646.84 : 21,978.90 = 5,419.32 : x
  2. Step 2: Convert to fraction form
    14,646.84/21,978.90 = 5,419.32/x
  3. Step 3: Cross multiply
    14,646.84x = 21,978.90 × 5,419.32
  4. Step 4: Simplify right side
    14,646.84x = 119,110,692.35
  5. Step 5: Solve for x
    x = 119,110,692.35/14,646.84
  6. Step 6: Final answer
    x = 8,132.18

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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.