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Finding the Fourth Proportional to 34,362.40, 51,538.80 and 10,991.20

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Solution

The fourth proportional to 34,362.40, 51,538.80 and 10,991.20 is: 16,485.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,362.40 : 51,538.80 = 10,991.20 : x
  2. Step 2: Convert to fraction form
    34,362.40/51,538.80 = 10,991.20/x
  3. Step 3: Cross multiply
    34,362.40x = 51,538.80 × 10,991.20
  4. Step 4: Simplify right side
    34,362.40x = 566,473,258.56
  5. Step 5: Solve for x
    x = 566,473,258.56/34,362.40
  6. Step 6: Final answer
    x = 16,485.26

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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.