Home / 21,438.40-29,584.95-12,007.03

Finding the Fourth Proportional to 21,438.40, 29,584.95 and 12,007.03

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Solution

The fourth proportional to 21,438.40, 29,584.95 and 12,007.03 is: 16,569.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,438.40 : 29,584.95 = 12,007.03 : x
  2. Step 2: Convert to fraction form
    21,438.40/29,584.95 = 12,007.03/x
  3. Step 3: Cross multiply
    21,438.40x = 29,584.95 × 12,007.03
  4. Step 4: Simplify right side
    21,438.40x = 355,227,382.20
  5. Step 5: Solve for x
    x = 355,227,382.20/21,438.40
  6. Step 6: Final answer
    x = 16,569.68

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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.