Home / 30,276.40-45,328.20-18,612.40

Finding the Fourth Proportional to 30,276.40, 45,328.20 and 18,612.40

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Solution

The fourth proportional to 30,276.40, 45,328.20 and 18,612.40 is: 27,865.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,276.40 : 45,328.20 = 18,612.40 : x
  2. Step 2: Convert to fraction form
    30,276.40/45,328.20 = 18,612.40/x
  3. Step 3: Cross multiply
    30,276.40x = 45,328.20 × 18,612.40
  4. Step 4: Simplify right side
    30,276.40x = 843,666,589.68
  5. Step 5: Solve for x
    x = 843,666,589.68/30,276.40
  6. Step 6: Final answer
    x = 27,865.49

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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.