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Finding the Fourth Proportional to 14,690.84, 20,313.23 and 14,453.45

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Solution

The fourth proportional to 14,690.84, 20,313.23 and 14,453.45 is: 19,984.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,690.84 : 20,313.23 = 14,453.45 : x
  2. Step 2: Convert to fraction form
    14,690.84/20,313.23 = 14,453.45/x
  3. Step 3: Cross multiply
    14,690.84x = 20,313.23 × 14,453.45
  4. Step 4: Simplify right side
    14,690.84x = 293,596,080.31
  5. Step 5: Solve for x
    x = 293,596,080.31/14,690.84
  6. Step 6: Final answer
    x = 19,984.97

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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.