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Finding the Fourth Proportional to 34,019.80, 51,021.90 and 12,962.23

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Solution

The fourth proportional to 34,019.80, 51,021.90 and 12,962.23 is: 19,440.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,019.80 : 51,021.90 = 12,962.23 : x
  2. Step 2: Convert to fraction form
    34,019.80/51,021.90 = 12,962.23/x
  3. Step 3: Cross multiply
    34,019.80x = 51,021.90 × 12,962.23
  4. Step 4: Simplify right side
    34,019.80x = 661,357,475.28
  5. Step 5: Solve for x
    x = 661,357,475.28/34,019.80
  6. Step 6: Final answer
    x = 19,440.37

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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.