Home / 14,128.30-21,168.15-9,195.40

Finding the Fourth Proportional to 14,128.30, 21,168.15 and 9,195.40

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Solution

The fourth proportional to 14,128.30, 21,168.15 and 9,195.40 is: 13,777.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,128.30 : 21,168.15 = 9,195.40 : x
  2. Step 2: Convert to fraction form
    14,128.30/21,168.15 = 9,195.40/x
  3. Step 3: Cross multiply
    14,128.30x = 21,168.15 × 9,195.40
  4. Step 4: Simplify right side
    14,128.30x = 194,649,606.51
  5. Step 5: Solve for x
    x = 194,649,606.51/14,128.30
  6. Step 6: Final answer
    x = 13,777.28

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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.