Home / 30,089.07-45,121.23-9,021.69

Finding the Fourth Proportional to 30,089.07, 45,121.23 and 9,021.69

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Solution

The fourth proportional to 30,089.07, 45,121.23 and 9,021.69 is: 13,528.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,089.07 : 45,121.23 = 9,021.69 : x
  2. Step 2: Convert to fraction form
    30,089.07/45,121.23 = 9,021.69/x
  3. Step 3: Cross multiply
    30,089.07x = 45,121.23 × 9,021.69
  4. Step 4: Simplify right side
    30,089.07x = 407,069,749.48
  5. Step 5: Solve for x
    x = 407,069,749.48/30,089.07
  6. Step 6: Final answer
    x = 13,528.82

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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.