Home / 21,384.72-29,510.28-11,825.28

Finding the Fourth Proportional to 21,384.72, 29,510.28 and 11,825.28

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Solution

The fourth proportional to 21,384.72, 29,510.28 and 11,825.28 is: 16,318.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,384.72 : 29,510.28 = 11,825.28 : x
  2. Step 2: Convert to fraction form
    21,384.72/29,510.28 = 11,825.28/x
  3. Step 3: Cross multiply
    21,384.72x = 29,510.28 × 11,825.28
  4. Step 4: Simplify right side
    21,384.72x = 348,967,323.88
  5. Step 5: Solve for x
    x = 348,967,323.88/21,384.72
  6. Step 6: Final answer
    x = 16,318.54

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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.