Home / 30,189.92-45,270.32-12,655.04

Finding the Fourth Proportional to 30,189.92, 45,270.32 and 12,655.04

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Solution

The fourth proportional to 30,189.92, 45,270.32 and 12,655.04 is: 18,976.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,189.92 : 45,270.32 = 12,655.04 : x
  2. Step 2: Convert to fraction form
    30,189.92/45,270.32 = 12,655.04/x
  3. Step 3: Cross multiply
    30,189.92x = 45,270.32 × 12,655.04
  4. Step 4: Simplify right side
    30,189.92x = 572,897,647.14
  5. Step 5: Solve for x
    x = 572,897,647.14/30,189.92
  6. Step 6: Final answer
    x = 18,976.45

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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.