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Finding the Fourth Proportional to 14,157.18, 19,457.01 and 11,007.90

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Solution

The fourth proportional to 14,157.18, 19,457.01 and 11,007.90 is: 15,128.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,157.18 : 19,457.01 = 11,007.90 : x
  2. Step 2: Convert to fraction form
    14,157.18/19,457.01 = 11,007.90/x
  3. Step 3: Cross multiply
    14,157.18x = 19,457.01 × 11,007.90
  4. Step 4: Simplify right side
    14,157.18x = 214,180,820.38
  5. Step 5: Solve for x
    x = 214,180,820.38/14,157.18
  6. Step 6: Final answer
    x = 15,128.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.