Home / 30,201.16-45,287.12-12,666.28

Finding the Fourth Proportional to 30,201.16, 45,287.12 and 12,666.28

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Solution

The fourth proportional to 30,201.16, 45,287.12 and 12,666.28 is: 18,993.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,201.16 : 45,287.12 = 12,666.28 : x
  2. Step 2: Convert to fraction form
    30,201.16/45,287.12 = 12,666.28/x
  3. Step 3: Cross multiply
    30,201.16x = 45,287.12 × 12,666.28
  4. Step 4: Simplify right side
    30,201.16x = 573,619,342.31
  5. Step 5: Solve for x
    x = 573,619,342.31/30,201.16
  6. Step 6: Final answer
    x = 18,993.29

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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.