Home / 29,148.32-40,236.21-18,390.98

Finding the Fourth Proportional to 29,148.32, 40,236.21 and 18,390.98

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Solution

The fourth proportional to 29,148.32, 40,236.21 and 18,390.98 is: 25,386.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,148.32 : 40,236.21 = 18,390.98 : x
  2. Step 2: Convert to fraction form
    29,148.32/40,236.21 = 18,390.98/x
  3. Step 3: Cross multiply
    29,148.32x = 40,236.21 × 18,390.98
  4. Step 4: Simplify right side
    29,148.32x = 739,983,433.98
  5. Step 5: Solve for x
    x = 739,983,433.98/29,148.32
  6. Step 6: Final answer
    x = 25,386.83

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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.