Home / 30,126.48-41,528.46-21,148.80

Finding the Fourth Proportional to 30,126.48, 41,528.46 and 21,148.80

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Solution

The fourth proportional to 30,126.48, 41,528.46 and 21,148.80 is: 29,152.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,126.48 : 41,528.46 = 21,148.80 : x
  2. Step 2: Convert to fraction form
    30,126.48/41,528.46 = 21,148.80/x
  3. Step 3: Cross multiply
    30,126.48x = 41,528.46 × 21,148.80
  4. Step 4: Simplify right side
    30,126.48x = 878,277,094.85
  5. Step 5: Solve for x
    x = 878,277,094.85/30,126.48
  6. Step 6: Final answer
    x = 29,152.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.