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Finding the Fourth Proportional to 30,602.48, 45,889.40 and 11,891.22

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Solution

The fourth proportional to 30,602.48, 45,889.40 and 11,891.22 is: 17,831.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,602.48 : 45,889.40 = 11,891.22 : x
  2. Step 2: Convert to fraction form
    30,602.48/45,889.40 = 11,891.22/x
  3. Step 3: Cross multiply
    30,602.48x = 45,889.40 × 11,891.22
  4. Step 4: Simplify right side
    30,602.48x = 545,680,951.07
  5. Step 5: Solve for x
    x = 545,680,951.07/30,602.48
  6. Step 6: Final answer
    x = 17,831.27

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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.