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Finding the Fourth Proportional to 37,415.40, 56,129.40 and 11,122.80

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Solution

The fourth proportional to 37,415.40, 56,129.40 and 11,122.80 is: 16,686.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,415.40 : 56,129.40 = 11,122.80 : x
  2. Step 2: Convert to fraction form
    37,415.40/56,129.40 = 11,122.80/x
  3. Step 3: Cross multiply
    37,415.40x = 56,129.40 × 11,122.80
  4. Step 4: Simplify right side
    37,415.40x = 624,316,090.32
  5. Step 5: Solve for x
    x = 624,316,090.32/37,415.40
  6. Step 6: Final answer
    x = 16,686.07

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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.