Home / 30,630.16-45,936.76-8,438.32

Finding the Fourth Proportional to 30,630.16, 45,936.76 and 8,438.32

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Solution

The fourth proportional to 30,630.16, 45,936.76 and 8,438.32 is: 12,655.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,630.16 : 45,936.76 = 8,438.32 : x
  2. Step 2: Convert to fraction form
    30,630.16/45,936.76 = 8,438.32/x
  3. Step 3: Cross multiply
    30,630.16x = 45,936.76 × 8,438.32
  4. Step 4: Simplify right side
    30,630.16x = 387,629,080.64
  5. Step 5: Solve for x
    x = 387,629,080.64/30,630.16
  6. Step 6: Final answer
    x = 12,655.14

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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.