Home / 30,211.20-45,298.80-18,532.80

Finding the Fourth Proportional to 30,211.20, 45,298.80 and 18,532.80

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Solution

The fourth proportional to 30,211.20, 45,298.80 and 18,532.80 is: 27,788.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,211.20 : 45,298.80 = 18,532.80 : x
  2. Step 2: Convert to fraction form
    30,211.20/45,298.80 = 18,532.80/x
  3. Step 3: Cross multiply
    30,211.20x = 45,298.80 × 18,532.80
  4. Step 4: Simplify right side
    30,211.20x = 839,513,600.64
  5. Step 5: Solve for x
    x = 839,513,600.64/30,211.20
  6. Step 6: Final answer
    x = 27,788.16

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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.