Home / 37,133.76-51,243.88-21,000.78

Finding the Fourth Proportional to 37,133.76, 51,243.88 and 21,000.78

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Solution

The fourth proportional to 37,133.76, 51,243.88 and 21,000.78 is: 28,980.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,133.76 : 51,243.88 = 21,000.78 : x
  2. Step 2: Convert to fraction form
    37,133.76/51,243.88 = 21,000.78/x
  3. Step 3: Cross multiply
    37,133.76x = 51,243.88 × 21,000.78
  4. Step 4: Simplify right side
    37,133.76x = 1,076,161,578.34
  5. Step 5: Solve for x
    x = 1,076,161,578.34/37,133.76
  6. Step 6: Final answer
    x = 28,980.68

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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.