Home / 30,207.90-45,311.85-28,239.60

Finding the Fourth Proportional to 30,207.90, 45,311.85 and 28,239.60

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Solution

The fourth proportional to 30,207.90, 45,311.85 and 28,239.60 is: 42,359.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,207.90 : 45,311.85 = 28,239.60 : x
  2. Step 2: Convert to fraction form
    30,207.90/45,311.85 = 28,239.60/x
  3. Step 3: Cross multiply
    30,207.90x = 45,311.85 × 28,239.60
  4. Step 4: Simplify right side
    30,207.90x = 1,279,588,519.26
  5. Step 5: Solve for x
    x = 1,279,588,519.26/30,207.90
  6. Step 6: Final answer
    x = 42,359.40

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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.