Home / 28,966.40-39,973.44-16,391.20

Finding the Fourth Proportional to 28,966.40, 39,973.44 and 16,391.20

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Solution

The fourth proportional to 28,966.40, 39,973.44 and 16,391.20 is: 22,619.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,966.40 : 39,973.44 = 16,391.20 : x
  2. Step 2: Convert to fraction form
    28,966.40/39,973.44 = 16,391.20/x
  3. Step 3: Cross multiply
    28,966.40x = 39,973.44 × 16,391.20
  4. Step 4: Simplify right side
    28,966.40x = 655,212,649.73
  5. Step 5: Solve for x
    x = 655,212,649.73/28,966.40
  6. Step 6: Final answer
    x = 22,619.75

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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.