Home / 71,426.88-107,131.20-18,840.32

Finding the Fourth Proportional to 71,426.88, 107,131.20 and 18,840.32

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Solution

The fourth proportional to 71,426.88, 107,131.20 and 18,840.32 is: 28,258.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,426.88 : 107,131.20 = 18,840.32 : x
  2. Step 2: Convert to fraction form
    71,426.88/107,131.20 = 18,840.32/x
  3. Step 3: Cross multiply
    71,426.88x = 107,131.20 × 18,840.32
  4. Step 4: Simplify right side
    71,426.88x = 2,018,386,089.98
  5. Step 5: Solve for x
    x = 2,018,386,089.98/71,426.88
  6. Step 6: Final answer
    x = 28,258.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.