Home / 30,080.20-45,111.54-9,019.40

Finding the Fourth Proportional to 30,080.20, 45,111.54 and 9,019.40

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Solution

The fourth proportional to 30,080.20, 45,111.54 and 9,019.40 is: 13,526.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,080.20 : 45,111.54 = 9,019.40 : x
  2. Step 2: Convert to fraction form
    30,080.20/45,111.54 = 9,019.40/x
  3. Step 3: Cross multiply
    30,080.20x = 45,111.54 × 9,019.40
  4. Step 4: Simplify right side
    30,080.20x = 406,879,023.88
  5. Step 5: Solve for x
    x = 406,879,023.88/30,080.20
  6. Step 6: Final answer
    x = 13,526.47

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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.