Home / 30,189.09-45,284.03-9,129.30

Finding the Fourth Proportional to 30,189.09, 45,284.03 and 9,129.30

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Solution

The fourth proportional to 30,189.09, 45,284.03 and 9,129.30 is: 13,694.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,189.09 : 45,284.03 = 9,129.30 : x
  2. Step 2: Convert to fraction form
    30,189.09/45,284.03 = 9,129.30/x
  3. Step 3: Cross multiply
    30,189.09x = 45,284.03 × 9,129.30
  4. Step 4: Simplify right side
    30,189.09x = 413,411,495.08
  5. Step 5: Solve for x
    x = 413,411,495.08/30,189.09
  6. Step 6: Final answer
    x = 13,694.07

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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.