Home / 30,428.23-42,003.93-18,495.43

Finding the Fourth Proportional to 30,428.23, 42,003.93 and 18,495.43

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Solution

The fourth proportional to 30,428.23, 42,003.93 and 18,495.43 is: 25,531.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,428.23 : 42,003.93 = 18,495.43 : x
  2. Step 2: Convert to fraction form
    30,428.23/42,003.93 = 18,495.43/x
  3. Step 3: Cross multiply
    30,428.23x = 42,003.93 × 18,495.43
  4. Step 4: Simplify right side
    30,428.23x = 776,880,747.04
  5. Step 5: Solve for x
    x = 776,880,747.04/30,428.23
  6. Step 6: Final answer
    x = 25,531.58

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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.