Home / 30,358.40-45,515.48-20,473.12

Finding the Fourth Proportional to 30,358.40, 45,515.48 and 20,473.12

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Solution

The fourth proportional to 30,358.40, 45,515.48 and 20,473.12 is: 30,694.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,358.40 : 45,515.48 = 20,473.12 : x
  2. Step 2: Convert to fraction form
    30,358.40/45,515.48 = 20,473.12/x
  3. Step 3: Cross multiply
    30,358.40x = 45,515.48 × 20,473.12
  4. Step 4: Simplify right side
    30,358.40x = 931,843,883.90
  5. Step 5: Solve for x
    x = 931,843,883.90/30,358.40
  6. Step 6: Final answer
    x = 30,694.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.