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Finding the Fourth Proportional to 37,698.84, 56,554.40 and 12,740.40

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Solution

The fourth proportional to 37,698.84, 56,554.40 and 12,740.40 is: 19,112.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,698.84 : 56,554.40 = 12,740.40 : x
  2. Step 2: Convert to fraction form
    37,698.84/56,554.40 = 12,740.40/x
  3. Step 3: Cross multiply
    37,698.84x = 56,554.40 × 12,740.40
  4. Step 4: Simplify right side
    37,698.84x = 720,525,709.61
  5. Step 5: Solve for x
    x = 720,525,709.61/37,698.84
  6. Step 6: Final answer
    x = 19,112.68

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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.