Home / 30,142.48-45,192.64-11,423.56

Finding the Fourth Proportional to 30,142.48, 45,192.64 and 11,423.56

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Solution

The fourth proportional to 30,142.48, 45,192.64 and 11,423.56 is: 17,127.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,142.48 : 45,192.64 = 11,423.56 : x
  2. Step 2: Convert to fraction form
    30,142.48/45,192.64 = 11,423.56/x
  3. Step 3: Cross multiply
    30,142.48x = 45,192.64 × 11,423.56
  4. Step 4: Simplify right side
    30,142.48x = 516,260,834.60
  5. Step 5: Solve for x
    x = 516,260,834.60/30,142.48
  6. Step 6: Final answer
    x = 17,127.35

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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.