Home / 12,900.95-19,352.45-5,505.47

Finding the Fourth Proportional to 12,900.95, 19,352.45 and 5,505.47

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Solution

The fourth proportional to 12,900.95, 19,352.45 and 5,505.47 is: 8,258.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,900.95 : 19,352.45 = 5,505.47 : x
  2. Step 2: Convert to fraction form
    12,900.95/19,352.45 = 5,505.47/x
  3. Step 3: Cross multiply
    12,900.95x = 19,352.45 × 5,505.47
  4. Step 4: Simplify right side
    12,900.95x = 106,544,305.37
  5. Step 5: Solve for x
    x = 106,544,305.37/12,900.95
  6. Step 6: Final answer
    x = 8,258.64

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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.