Home / 21,457.12-29,614.26-12,509.86

Finding the Fourth Proportional to 21,457.12, 29,614.26 and 12,509.86

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Solution

The fourth proportional to 21,457.12, 29,614.26 and 12,509.86 is: 17,265.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,457.12 : 29,614.26 = 12,509.86 : x
  2. Step 2: Convert to fraction form
    21,457.12/29,614.26 = 12,509.86/x
  3. Step 3: Cross multiply
    21,457.12x = 29,614.26 × 12,509.86
  4. Step 4: Simplify right side
    21,457.12x = 370,470,246.60
  5. Step 5: Solve for x
    x = 370,470,246.60/21,457.12
  6. Step 6: Final answer
    x = 17,265.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.