Home / 30,637.28-42,268.68-20,033.12

Finding the Fourth Proportional to 30,637.28, 42,268.68 and 20,033.12

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Solution

The fourth proportional to 30,637.28, 42,268.68 and 20,033.12 is: 27,638.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,637.28 : 42,268.68 = 20,033.12 : x
  2. Step 2: Convert to fraction form
    30,637.28/42,268.68 = 20,033.12/x
  3. Step 3: Cross multiply
    30,637.28x = 42,268.68 × 20,033.12
  4. Step 4: Simplify right side
    30,637.28x = 846,773,538.68
  5. Step 5: Solve for x
    x = 846,773,538.68/30,637.28
  6. Step 6: Final answer
    x = 27,638.67

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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.