Home / 12,904.31-19,356.47-3,670.31

Finding the Fourth Proportional to 12,904.31, 19,356.47 and 3,670.31

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Solution

The fourth proportional to 12,904.31, 19,356.47 and 3,670.31 is: 5,505.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,904.31 : 19,356.47 = 3,670.31 : x
  2. Step 2: Convert to fraction form
    12,904.31/19,356.47 = 3,670.31/x
  3. Step 3: Cross multiply
    12,904.31x = 19,356.47 × 3,670.31
  4. Step 4: Simplify right side
    12,904.31x = 71,044,289.21
  5. Step 5: Solve for x
    x = 71,044,289.21/12,904.31
  6. Step 6: Final answer
    x = 5,505.47

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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.