Home / 30,561.36-42,164.70-17,811.62

Finding the Fourth Proportional to 30,561.36, 42,164.70 and 17,811.62

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Solution

The fourth proportional to 30,561.36, 42,164.70 and 17,811.62 is: 24,574.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,561.36 : 42,164.70 = 17,811.62 : x
  2. Step 2: Convert to fraction form
    30,561.36/42,164.70 = 17,811.62/x
  3. Step 3: Cross multiply
    30,561.36x = 42,164.70 × 17,811.62
  4. Step 4: Simplify right side
    30,561.36x = 751,021,613.81
  5. Step 5: Solve for x
    x = 751,021,613.81/30,561.36
  6. Step 6: Final answer
    x = 24,574.22

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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.