Home / 28,006.90-38,654.80-16,078.02

Finding the Fourth Proportional to 28,006.90, 38,654.80 and 16,078.02

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Solution

The fourth proportional to 28,006.90, 38,654.80 and 16,078.02 is: 22,190.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,006.90 : 38,654.80 = 16,078.02 : x
  2. Step 2: Convert to fraction form
    28,006.90/38,654.80 = 16,078.02/x
  3. Step 3: Cross multiply
    28,006.90x = 38,654.80 × 16,078.02
  4. Step 4: Simplify right side
    28,006.90x = 621,492,647.50
  5. Step 5: Solve for x
    x = 621,492,647.50/28,006.90
  6. Step 6: Final answer
    x = 22,190.70

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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.