Home / 21,510.84-29,616.30-18,354.36

Finding the Fourth Proportional to 21,510.84, 29,616.30 and 18,354.36

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Solution

The fourth proportional to 21,510.84, 29,616.30 and 18,354.36 is: 25,270.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,510.84 : 29,616.30 = 18,354.36 : x
  2. Step 2: Convert to fraction form
    21,510.84/29,616.30 = 18,354.36/x
  3. Step 3: Cross multiply
    21,510.84x = 29,616.30 × 18,354.36
  4. Step 4: Simplify right side
    21,510.84x = 543,588,232.07
  5. Step 5: Solve for x
    x = 543,588,232.07/21,510.84
  6. Step 6: Final answer
    x = 25,270.43

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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.