Home / 30,969.28-42,741.44-18,394.08

Finding the Fourth Proportional to 30,969.28, 42,741.44 and 18,394.08

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Solution

The fourth proportional to 30,969.28, 42,741.44 and 18,394.08 is: 25,386.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,969.28 : 42,741.44 = 18,394.08 : x
  2. Step 2: Convert to fraction form
    30,969.28/42,741.44 = 18,394.08/x
  3. Step 3: Cross multiply
    30,969.28x = 42,741.44 × 18,394.08
  4. Step 4: Simplify right side
    30,969.28x = 786,189,466.68
  5. Step 5: Solve for x
    x = 786,189,466.68/30,969.28
  6. Step 6: Final answer
    x = 25,386.11

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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.