Home / 31,276.89-43,163.15-17,130.51

Finding the Fourth Proportional to 31,276.89, 43,163.15 and 17,130.51

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Solution

The fourth proportional to 31,276.89, 43,163.15 and 17,130.51 is: 23,640.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,276.89 : 43,163.15 = 17,130.51 : x
  2. Step 2: Convert to fraction form
    31,276.89/43,163.15 = 17,130.51/x
  3. Step 3: Cross multiply
    31,276.89x = 43,163.15 × 17,130.51
  4. Step 4: Simplify right side
    31,276.89x = 739,406,687.05
  5. Step 5: Solve for x
    x = 739,406,687.05/31,276.89
  6. Step 6: Final answer
    x = 23,640.67

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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.