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Finding the Fourth Proportional to 34,641.60, 51,962.40 and 12,455.70

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Solution

The fourth proportional to 34,641.60, 51,962.40 and 12,455.70 is: 18,683.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,641.60 : 51,962.40 = 12,455.70 : x
  2. Step 2: Convert to fraction form
    34,641.60/51,962.40 = 12,455.70/x
  3. Step 3: Cross multiply
    34,641.60x = 51,962.40 × 12,455.70
  4. Step 4: Simplify right side
    34,641.60x = 647,228,065.68
  5. Step 5: Solve for x
    x = 647,228,065.68/34,641.60
  6. Step 6: Final answer
    x = 18,683.55

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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.