Home / 30,305.80-45,412.57-14,489.10

Finding the Fourth Proportional to 30,305.80, 45,412.57 and 14,489.10

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Solution

The fourth proportional to 30,305.80, 45,412.57 and 14,489.10 is: 21,711.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,305.80 : 45,412.57 = 14,489.10 : x
  2. Step 2: Convert to fraction form
    30,305.80/45,412.57 = 14,489.10/x
  3. Step 3: Cross multiply
    30,305.80x = 45,412.57 × 14,489.10
  4. Step 4: Simplify right side
    30,305.80x = 657,987,454.57
  5. Step 5: Solve for x
    x = 657,987,454.57/30,305.80
  6. Step 6: Final answer
    x = 21,711.60

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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.