Home / 30,147.04-45,222-11,425.60

Finding the Fourth Proportional to 30,147.04, 45,222 and 11,425.60

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Solution

The fourth proportional to 30,147.04, 45,222 and 11,425.60 is: 17,138.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,147.04 : 45,222 = 11,425.60 : x
  2. Step 2: Convert to fraction form
    30,147.04/45,222 = 11,425.60/x
  3. Step 3: Cross multiply
    30,147.04x = 45,222 × 11,425.60
  4. Step 4: Simplify right side
    30,147.04x = 516,688,483.20
  5. Step 5: Solve for x
    x = 516,688,483.20/30,147.04
  6. Step 6: Final answer
    x = 17,138.95

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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.