Home / 28,621.13-39,507.89-16,688.21

Finding the Fourth Proportional to 28,621.13, 39,507.89 and 16,688.21

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Solution

The fourth proportional to 28,621.13, 39,507.89 and 16,688.21 is: 23,035.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,621.13 : 39,507.89 = 16,688.21 : x
  2. Step 2: Convert to fraction form
    28,621.13/39,507.89 = 16,688.21/x
  3. Step 3: Cross multiply
    28,621.13x = 39,507.89 × 16,688.21
  4. Step 4: Simplify right side
    28,621.13x = 659,315,684.00
  5. Step 5: Solve for x
    x = 659,315,684.00/28,621.13
  6. Step 6: Final answer
    x = 23,035.98

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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.