Home / 28,487.46-39,320.35-16,389.33

Finding the Fourth Proportional to 28,487.46, 39,320.35 and 16,389.33

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Solution

The fourth proportional to 28,487.46, 39,320.35 and 16,389.33 is: 22,621.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,487.46 : 39,320.35 = 16,389.33 : x
  2. Step 2: Convert to fraction form
    28,487.46/39,320.35 = 16,389.33/x
  3. Step 3: Cross multiply
    28,487.46x = 39,320.35 × 16,389.33
  4. Step 4: Simplify right side
    28,487.46x = 644,433,995.26
  5. Step 5: Solve for x
    x = 644,433,995.26/28,487.46
  6. Step 6: Final answer
    x = 22,621.67

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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.