Home / 30,147.02-45,214.38-11,420.66

Finding the Fourth Proportional to 30,147.02, 45,214.38 and 11,420.66

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Solution

The fourth proportional to 30,147.02, 45,214.38 and 11,420.66 is: 17,128.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,147.02 : 45,214.38 = 11,420.66 : x
  2. Step 2: Convert to fraction form
    30,147.02/45,214.38 = 11,420.66/x
  3. Step 3: Cross multiply
    30,147.02x = 45,214.38 × 11,420.66
  4. Step 4: Simplify right side
    30,147.02x = 516,378,061.09
  5. Step 5: Solve for x
    x = 516,378,061.09/30,147.02
  6. Step 6: Final answer
    x = 17,128.66

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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.