Home / 31,684.53-43,723.08-20,355.06

Finding the Fourth Proportional to 31,684.53, 43,723.08 and 20,355.06

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Solution

The fourth proportional to 31,684.53, 43,723.08 and 20,355.06 is: 28,088.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,684.53 : 43,723.08 = 20,355.06 : x
  2. Step 2: Convert to fraction form
    31,684.53/43,723.08 = 20,355.06/x
  3. Step 3: Cross multiply
    31,684.53x = 43,723.08 × 20,355.06
  4. Step 4: Simplify right side
    31,684.53x = 889,985,916.78
  5. Step 5: Solve for x
    x = 889,985,916.78/31,684.53
  6. Step 6: Final answer
    x = 28,088.97

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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.