Home / 21,384.75-29,510.96-11,955.27

Finding the Fourth Proportional to 21,384.75, 29,510.96 and 11,955.27

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Solution

The fourth proportional to 21,384.75, 29,510.96 and 11,955.27 is: 16,498.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,384.75 : 29,510.96 = 11,955.27 : x
  2. Step 2: Convert to fraction form
    21,384.75/29,510.96 = 11,955.27/x
  3. Step 3: Cross multiply
    21,384.75x = 29,510.96 × 11,955.27
  4. Step 4: Simplify right side
    21,384.75x = 352,811,434.98
  5. Step 5: Solve for x
    x = 352,811,434.98/21,384.75
  6. Step 6: Final answer
    x = 16,498.27

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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.