Home / 12,889.31-19,334.70-4,005.48

Finding the Fourth Proportional to 12,889.31, 19,334.70 and 4,005.48

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Solution

The fourth proportional to 12,889.31, 19,334.70 and 4,005.48 is: 6,008.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,889.31 : 19,334.70 = 4,005.48 : x
  2. Step 2: Convert to fraction form
    12,889.31/19,334.70 = 4,005.48/x
  3. Step 3: Cross multiply
    12,889.31x = 19,334.70 × 4,005.48
  4. Step 4: Simplify right side
    12,889.31x = 77,444,754.16
  5. Step 5: Solve for x
    x = 77,444,754.16/12,889.31
  6. Step 6: Final answer
    x = 6,008.45

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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.