Home / 31,315.16-43,216.28-18,737.48

Finding the Fourth Proportional to 31,315.16, 43,216.28 and 18,737.48

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Solution

The fourth proportional to 31,315.16, 43,216.28 and 18,737.48 is: 25,858.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,315.16 : 43,216.28 = 18,737.48 : x
  2. Step 2: Convert to fraction form
    31,315.16/43,216.28 = 18,737.48/x
  3. Step 3: Cross multiply
    31,315.16x = 43,216.28 × 18,737.48
  4. Step 4: Simplify right side
    31,315.16x = 809,764,182.17
  5. Step 5: Solve for x
    x = 809,764,182.17/31,315.16
  6. Step 6: Final answer
    x = 25,858.54

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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.