Home / 30,359.62-45,554.92-20,478.18

Finding the Fourth Proportional to 30,359.62, 45,554.92 and 20,478.18

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Solution

The fourth proportional to 30,359.62, 45,554.92 and 20,478.18 is: 30,727.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,359.62 : 45,554.92 = 20,478.18 : x
  2. Step 2: Convert to fraction form
    30,359.62/45,554.92 = 20,478.18/x
  3. Step 3: Cross multiply
    30,359.62x = 45,554.92 × 20,478.18
  4. Step 4: Simplify right side
    30,359.62x = 932,881,749.25
  5. Step 5: Solve for x
    x = 932,881,749.25/30,359.62
  6. Step 6: Final answer
    x = 30,727.72

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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.