Home / 28,026.69-38,676.36-15,280.40

Finding the Fourth Proportional to 28,026.69, 38,676.36 and 15,280.40

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Solution

The fourth proportional to 28,026.69, 38,676.36 and 15,280.40 is: 21,086.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,026.69 : 38,676.36 = 15,280.40 : x
  2. Step 2: Convert to fraction form
    28,026.69/38,676.36 = 15,280.40/x
  3. Step 3: Cross multiply
    28,026.69x = 38,676.36 × 15,280.40
  4. Step 4: Simplify right side
    28,026.69x = 590,990,057.96
  5. Step 5: Solve for x
    x = 590,990,057.96/28,026.69
  6. Step 6: Final answer
    x = 21,086.69

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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.