Home / 23,123.57-31,910.60-12,513.20

Finding the Fourth Proportional to 23,123.57, 31,910.60 and 12,513.20

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Solution

The fourth proportional to 23,123.57, 31,910.60 and 12,513.20 is: 17,268.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,123.57 : 31,910.60 = 12,513.20 : x
  2. Step 2: Convert to fraction form
    23,123.57/31,910.60 = 12,513.20/x
  3. Step 3: Cross multiply
    23,123.57x = 31,910.60 × 12,513.20
  4. Step 4: Simplify right side
    23,123.57x = 399,303,591.65
  5. Step 5: Solve for x
    x = 399,303,591.65/23,123.57
  6. Step 6: Final answer
    x = 17,268.25

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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.