Home / 21,346.61-29,457.81-12,393.86

Finding the Fourth Proportional to 21,346.61, 29,457.81 and 12,393.86

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Solution

The fourth proportional to 21,346.61, 29,457.81 and 12,393.86 is: 17,103.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,346.61 : 29,457.81 = 12,393.86 : x
  2. Step 2: Convert to fraction form
    21,346.61/29,457.81 = 12,393.86/x
  3. Step 3: Cross multiply
    21,346.61x = 29,457.81 × 12,393.86
  4. Step 4: Simplify right side
    21,346.61x = 365,095,825.76
  5. Step 5: Solve for x
    x = 365,095,825.76/21,346.61
  6. Step 6: Final answer
    x = 17,103.23

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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.