Home / 20,647.09-28,440.89-16,657.03

Finding the Fourth Proportional to 20,647.09, 28,440.89 and 16,657.03

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Solution

The fourth proportional to 20,647.09, 28,440.89 and 16,657.03 is: 22,944.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,647.09 : 28,440.89 = 16,657.03 : x
  2. Step 2: Convert to fraction form
    20,647.09/28,440.89 = 16,657.03/x
  3. Step 3: Cross multiply
    20,647.09x = 28,440.89 × 16,657.03
  4. Step 4: Simplify right side
    20,647.09x = 473,740,674.67
  5. Step 5: Solve for x
    x = 473,740,674.67/20,647.09
  6. Step 6: Final answer
    x = 22,944.67

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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.