Home / 30,169.80-45,180.81-21,263.22

Finding the Fourth Proportional to 30,169.80, 45,180.81 and 21,263.22

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Solution

The fourth proportional to 30,169.80, 45,180.81 and 21,263.22 is: 31,842.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,169.80 : 45,180.81 = 21,263.22 : x
  2. Step 2: Convert to fraction form
    30,169.80/45,180.81 = 21,263.22/x
  3. Step 3: Cross multiply
    30,169.80x = 45,180.81 × 21,263.22
  4. Step 4: Simplify right side
    30,169.80x = 960,689,502.81
  5. Step 5: Solve for x
    x = 960,689,502.81/30,169.80
  6. Step 6: Final answer
    x = 31,842.75

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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.