Home / 14,157.48-21,223.62-7,128.36

Finding the Fourth Proportional to 14,157.48, 21,223.62 and 7,128.36

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Solution

The fourth proportional to 14,157.48, 21,223.62 and 7,128.36 is: 10,686.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,157.48 : 21,223.62 = 7,128.36 : x
  2. Step 2: Convert to fraction form
    14,157.48/21,223.62 = 7,128.36/x
  3. Step 3: Cross multiply
    14,157.48x = 21,223.62 × 7,128.36
  4. Step 4: Simplify right side
    14,157.48x = 151,289,603.86
  5. Step 5: Solve for x
    x = 151,289,603.86/14,157.48
  6. Step 6: Final answer
    x = 10,686.20

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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.