Home / 12,889.20-19,294.74-11,657.16

Finding the Fourth Proportional to 12,889.20, 19,294.74 and 11,657.16

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Solution

The fourth proportional to 12,889.20, 19,294.74 and 11,657.16 is: 17,450.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,889.20 : 19,294.74 = 11,657.16 : x
  2. Step 2: Convert to fraction form
    12,889.20/19,294.74 = 11,657.16/x
  3. Step 3: Cross multiply
    12,889.20x = 19,294.74 × 11,657.16
  4. Step 4: Simplify right side
    12,889.20x = 224,921,871.34
  5. Step 5: Solve for x
    x = 224,921,871.34/12,889.20
  6. Step 6: Final answer
    x = 17,450.41

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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.