Home / 28,035.98-38,689.34-15,289.12

Finding the Fourth Proportional to 28,035.98, 38,689.34 and 15,289.12

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Solution

The fourth proportional to 28,035.98, 38,689.34 and 15,289.12 is: 21,098.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,035.98 : 38,689.34 = 15,289.12 : x
  2. Step 2: Convert to fraction form
    28,035.98/38,689.34 = 15,289.12/x
  3. Step 3: Cross multiply
    28,035.98x = 38,689.34 × 15,289.12
  4. Step 4: Simplify right side
    28,035.98x = 591,525,961.98
  5. Step 5: Solve for x
    x = 591,525,961.98/28,035.98
  6. Step 6: Final answer
    x = 21,098.82

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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.