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Finding the Fourth Proportional to 28,762.70, 43,144.02 and 9,042.98

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Solution

The fourth proportional to 28,762.70, 43,144.02 and 9,042.98 is: 13,564.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,762.70 : 43,144.02 = 9,042.98 : x
  2. Step 2: Convert to fraction form
    28,762.70/43,144.02 = 9,042.98/x
  3. Step 3: Cross multiply
    28,762.70x = 43,144.02 × 9,042.98
  4. Step 4: Simplify right side
    28,762.70x = 390,150,509.98
  5. Step 5: Solve for x
    x = 390,150,509.98/28,762.70
  6. Step 6: Final answer
    x = 13,564.46

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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.