Home / 30,541.73-42,142.68-18,608.81

Finding the Fourth Proportional to 30,541.73, 42,142.68 and 18,608.81

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Solution

The fourth proportional to 30,541.73, 42,142.68 and 18,608.81 is: 25,677.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,541.73 : 42,142.68 = 18,608.81 : x
  2. Step 2: Convert to fraction form
    30,541.73/42,142.68 = 18,608.81/x
  3. Step 3: Cross multiply
    30,541.73x = 42,142.68 × 18,608.81
  4. Step 4: Simplify right side
    30,541.73x = 784,224,914.30
  5. Step 5: Solve for x
    x = 784,224,914.30/30,541.73
  6. Step 6: Final answer
    x = 25,677.17

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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.