Home / 28,863.10-39,840.15-16,931.26

Finding the Fourth Proportional to 28,863.10, 39,840.15 and 16,931.26

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Solution

The fourth proportional to 28,863.10, 39,840.15 and 16,931.26 is: 23,370.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,863.10 : 39,840.15 = 16,931.26 : x
  2. Step 2: Convert to fraction form
    28,863.10/39,840.15 = 16,931.26/x
  3. Step 3: Cross multiply
    28,863.10x = 39,840.15 × 16,931.26
  4. Step 4: Simplify right side
    28,863.10x = 674,543,938.09
  5. Step 5: Solve for x
    x = 674,543,938.09/28,863.10
  6. Step 6: Final answer
    x = 23,370.46

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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.