Home / 30,210.80-45,305.42-11,485.86

Finding the Fourth Proportional to 30,210.80, 45,305.42 and 11,485.86

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Solution

The fourth proportional to 30,210.80, 45,305.42 and 11,485.86 is: 17,224.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,210.80 : 45,305.42 = 11,485.86 : x
  2. Step 2: Convert to fraction form
    30,210.80/45,305.42 = 11,485.86/x
  3. Step 3: Cross multiply
    30,210.80x = 45,305.42 × 11,485.86
  4. Step 4: Simplify right side
    30,210.80x = 520,371,711.36
  5. Step 5: Solve for x
    x = 520,371,711.36/30,210.80
  6. Step 6: Final answer
    x = 17,224.69

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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.