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Finding the Fourth Proportional to 14,012.80, 21,020.11 and 4,653.45

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Solution

The fourth proportional to 14,012.80, 21,020.11 and 4,653.45 is: 6,980.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,012.80 : 21,020.11 = 4,653.45 : x
  2. Step 2: Convert to fraction form
    14,012.80/21,020.11 = 4,653.45/x
  3. Step 3: Cross multiply
    14,012.80x = 21,020.11 × 4,653.45
  4. Step 4: Simplify right side
    14,012.80x = 97,816,019.25
  5. Step 5: Solve for x
    x = 97,816,019.25/14,012.80
  6. Step 6: Final answer
    x = 6,980.48

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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.