Home / 30,420.13-41,977.04-16,989.52

Finding the Fourth Proportional to 30,420.13, 41,977.04 and 16,989.52

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Solution

The fourth proportional to 30,420.13, 41,977.04 and 16,989.52 is: 23,444.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,420.13 : 41,977.04 = 16,989.52 : x
  2. Step 2: Convert to fraction form
    30,420.13/41,977.04 = 16,989.52/x
  3. Step 3: Cross multiply
    30,420.13x = 41,977.04 × 16,989.52
  4. Step 4: Simplify right side
    30,420.13x = 713,169,760.62
  5. Step 5: Solve for x
    x = 713,169,760.62/30,420.13
  6. Step 6: Final answer
    x = 23,444.01

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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.