Home / 31,803.02-43,890.21-18,374.84

Finding the Fourth Proportional to 31,803.02, 43,890.21 and 18,374.84

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Solution

The fourth proportional to 31,803.02, 43,890.21 and 18,374.84 is: 25,358.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,803.02 : 43,890.21 = 18,374.84 : x
  2. Step 2: Convert to fraction form
    31,803.02/43,890.21 = 18,374.84/x
  3. Step 3: Cross multiply
    31,803.02x = 43,890.21 × 18,374.84
  4. Step 4: Simplify right side
    31,803.02x = 806,475,586.32
  5. Step 5: Solve for x
    x = 806,475,586.32/31,803.02
  6. Step 6: Final answer
    x = 25,358.46

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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.