Home / 21,292.86-29,384.19-11,861.76

Finding the Fourth Proportional to 21,292.86, 29,384.19 and 11,861.76

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Solution

The fourth proportional to 21,292.86, 29,384.19 and 11,861.76 is: 16,369.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,292.86 : 29,384.19 = 11,861.76 : x
  2. Step 2: Convert to fraction form
    21,292.86/29,384.19 = 11,861.76/x
  3. Step 3: Cross multiply
    21,292.86x = 29,384.19 × 11,861.76
  4. Step 4: Simplify right side
    21,292.86x = 348,548,209.57
  5. Step 5: Solve for x
    x = 348,548,209.57/21,292.86
  6. Step 6: Final answer
    x = 16,369.25

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1.5x scale

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.