Home / 21,384.36-29,509.68-11,823.66

Finding the Fourth Proportional to 21,384.36, 29,509.68 and 11,823.66

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Solution

The fourth proportional to 21,384.36, 29,509.68 and 11,823.66 is: 16,316.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,384.36 : 29,509.68 = 11,823.66 : x
  2. Step 2: Convert to fraction form
    21,384.36/29,509.68 = 11,823.66/x
  3. Step 3: Cross multiply
    21,384.36x = 29,509.68 × 11,823.66
  4. Step 4: Simplify right side
    21,384.36x = 348,912,423.03
  5. Step 5: Solve for x
    x = 348,912,423.03/21,384.36
  6. Step 6: Final answer
    x = 16,316.24

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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.