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Finding the Fourth Proportional to 15,812.41, 21,820.02 and 8,739.37

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Solution

The fourth proportional to 15,812.41, 21,820.02 and 8,739.37 is: 12,059.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,812.41 : 21,820.02 = 8,739.37 : x
  2. Step 2: Convert to fraction form
    15,812.41/21,820.02 = 8,739.37/x
  3. Step 3: Cross multiply
    15,812.41x = 21,820.02 × 8,739.37
  4. Step 4: Simplify right side
    15,812.41x = 190,693,228.19
  5. Step 5: Solve for x
    x = 190,693,228.19/15,812.41
  6. Step 6: Final answer
    x = 12,059.72

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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.