Home / 30,190.14-45,270.64-12,655.26

Finding the Fourth Proportional to 30,190.14, 45,270.64 and 12,655.26

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Solution

The fourth proportional to 30,190.14, 45,270.64 and 12,655.26 is: 18,976.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,190.14 : 45,270.64 = 12,655.26 : x
  2. Step 2: Convert to fraction form
    30,190.14/45,270.64 = 12,655.26/x
  3. Step 3: Cross multiply
    30,190.14x = 45,270.64 × 12,655.26
  4. Step 4: Simplify right side
    30,190.14x = 572,911,719.57
  5. Step 5: Solve for x
    x = 572,911,719.57/30,190.14
  6. Step 6: Final answer
    x = 18,976.78

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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.