Home / 21,109.84-31,651.96-14,528.80

Finding the Fourth Proportional to 21,109.84, 31,651.96 and 14,528.80

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Solution

The fourth proportional to 21,109.84, 31,651.96 and 14,528.80 is: 21,784.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,109.84 : 31,651.96 = 14,528.80 : x
  2. Step 2: Convert to fraction form
    21,109.84/31,651.96 = 14,528.80/x
  3. Step 3: Cross multiply
    21,109.84x = 31,651.96 × 14,528.80
  4. Step 4: Simplify right side
    21,109.84x = 459,864,996.45
  5. Step 5: Solve for x
    x = 459,864,996.45/21,109.84
  6. Step 6: Final answer
    x = 21,784.39

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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.