Home / 30,500.21-42,090.51-17,760.83

Finding the Fourth Proportional to 30,500.21, 42,090.51 and 17,760.83

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Solution

The fourth proportional to 30,500.21, 42,090.51 and 17,760.83 is: 24,510.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,500.21 : 42,090.51 = 17,760.83 : x
  2. Step 2: Convert to fraction form
    30,500.21/42,090.51 = 17,760.83/x
  3. Step 3: Cross multiply
    30,500.21x = 42,090.51 × 17,760.83
  4. Step 4: Simplify right side
    30,500.21x = 747,562,392.72
  5. Step 5: Solve for x
    x = 747,562,392.72/30,500.21
  6. Step 6: Final answer
    x = 24,510.07

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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.