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Finding the Fourth Proportional to 29,315.70, 43,973.64 and 7,129.08

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Solution

The fourth proportional to 29,315.70, 43,973.64 and 7,129.08 is: 10,693.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,315.70 : 43,973.64 = 7,129.08 : x
  2. Step 2: Convert to fraction form
    29,315.70/43,973.64 = 7,129.08/x
  3. Step 3: Cross multiply
    29,315.70x = 43,973.64 × 7,129.08
  4. Step 4: Simplify right side
    29,315.70x = 313,491,597.45
  5. Step 5: Solve for x
    x = 313,491,597.45/29,315.70
  6. Step 6: Final answer
    x = 10,693.64

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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.