Home / 30,154.41-41,607.08-18,218.40

Finding the Fourth Proportional to 30,154.41, 41,607.08 and 18,218.40

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Solution

The fourth proportional to 30,154.41, 41,607.08 and 18,218.40 is: 25,137.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,154.41 : 41,607.08 = 18,218.40 : x
  2. Step 2: Convert to fraction form
    30,154.41/41,607.08 = 18,218.40/x
  3. Step 3: Cross multiply
    30,154.41x = 41,607.08 × 18,218.40
  4. Step 4: Simplify right side
    30,154.41x = 758,014,335.18
  5. Step 5: Solve for x
    x = 758,014,335.18/30,154.41
  6. Step 6: Final answer
    x = 25,137.76

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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.