Home / 13,289.36-19,939.98-7,445.96

Finding the Fourth Proportional to 13,289.36, 19,939.98 and 7,445.96

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Solution

The fourth proportional to 13,289.36, 19,939.98 and 7,445.96 is: 11,172.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,289.36 : 19,939.98 = 7,445.96 : x
  2. Step 2: Convert to fraction form
    13,289.36/19,939.98 = 7,445.96/x
  3. Step 3: Cross multiply
    13,289.36x = 19,939.98 × 7,445.96
  4. Step 4: Simplify right side
    13,289.36x = 148,472,293.48
  5. Step 5: Solve for x
    x = 148,472,293.48/13,289.36
  6. Step 6: Final answer
    x = 11,172.27

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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.