Home / 28,264.75-39,005.36-15,690.67

Finding the Fourth Proportional to 28,264.75, 39,005.36 and 15,690.67

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Solution

The fourth proportional to 28,264.75, 39,005.36 and 15,690.67 is: 21,653.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,264.75 : 39,005.36 = 15,690.67 : x
  2. Step 2: Convert to fraction form
    28,264.75/39,005.36 = 15,690.67/x
  3. Step 3: Cross multiply
    28,264.75x = 39,005.36 × 15,690.67
  4. Step 4: Simplify right side
    28,264.75x = 612,020,153.54
  5. Step 5: Solve for x
    x = 612,020,153.54/28,264.75
  6. Step 6: Final answer
    x = 21,653.12

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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.