Home / 31,555.10-43,548.15-18,130.70

Finding the Fourth Proportional to 31,555.10, 43,548.15 and 18,130.70

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Solution

The fourth proportional to 31,555.10, 43,548.15 and 18,130.70 is: 25,021.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,555.10 : 43,548.15 = 18,130.70 : x
  2. Step 2: Convert to fraction form
    31,555.10/43,548.15 = 18,130.70/x
  3. Step 3: Cross multiply
    31,555.10x = 43,548.15 × 18,130.70
  4. Step 4: Simplify right side
    31,555.10x = 789,558,443.21
  5. Step 5: Solve for x
    x = 789,558,443.21/31,555.10
  6. Step 6: Final answer
    x = 25,021.58

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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.