Home / 30,344.64-45,518.88-12,812.16

Finding the Fourth Proportional to 30,344.64, 45,518.88 and 12,812.16

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Solution

The fourth proportional to 30,344.64, 45,518.88 and 12,812.16 is: 19,219.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,344.64 : 45,518.88 = 12,812.16 : x
  2. Step 2: Convert to fraction form
    30,344.64/45,518.88 = 12,812.16/x
  3. Step 3: Cross multiply
    30,344.64x = 45,518.88 × 12,812.16
  4. Step 4: Simplify right side
    30,344.64x = 583,195,173.58
  5. Step 5: Solve for x
    x = 583,195,173.58/30,344.64
  6. Step 6: Final answer
    x = 19,219.05

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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.