Home / 30,208.60-45,329.10-12,680.20

Finding the Fourth Proportional to 30,208.60, 45,329.10 and 12,680.20

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Solution

The fourth proportional to 30,208.60, 45,329.10 and 12,680.20 is: 19,027.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,208.60 : 45,329.10 = 12,680.20 : x
  2. Step 2: Convert to fraction form
    30,208.60/45,329.10 = 12,680.20/x
  3. Step 3: Cross multiply
    30,208.60x = 45,329.10 × 12,680.20
  4. Step 4: Simplify right side
    30,208.60x = 574,782,053.82
  5. Step 5: Solve for x
    x = 574,782,053.82/30,208.60
  6. Step 6: Final answer
    x = 19,027.10

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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.