Home / 28,005.84-38,640.36-16,068.60

Finding the Fourth Proportional to 28,005.84, 38,640.36 and 16,068.60

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Solution

The fourth proportional to 28,005.84, 38,640.36 and 16,068.60 is: 22,170.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,005.84 : 38,640.36 = 16,068.60 : x
  2. Step 2: Convert to fraction form
    28,005.84/38,640.36 = 16,068.60/x
  3. Step 3: Cross multiply
    28,005.84x = 38,640.36 × 16,068.60
  4. Step 4: Simplify right side
    28,005.84x = 620,896,488.70
  5. Step 5: Solve for x
    x = 620,896,488.70/28,005.84
  6. Step 6: Final answer
    x = 22,170.25

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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.