Home / 15,361.30-21,205.14-10,328.45

Finding the Fourth Proportional to 15,361.30, 21,205.14 and 10,328.45

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Solution

The fourth proportional to 15,361.30, 21,205.14 and 10,328.45 is: 14,257.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,361.30 : 21,205.14 = 10,328.45 : x
  2. Step 2: Convert to fraction form
    15,361.30/21,205.14 = 10,328.45/x
  3. Step 3: Cross multiply
    15,361.30x = 21,205.14 × 10,328.45
  4. Step 4: Simplify right side
    15,361.30x = 219,016,228.23
  5. Step 5: Solve for x
    x = 219,016,228.23/15,361.30
  6. Step 6: Final answer
    x = 14,257.66

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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.