Home / 12,972.60-19,437.30-8,587.80

Finding the Fourth Proportional to 12,972.60, 19,437.30 and 8,587.80

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Solution

The fourth proportional to 12,972.60, 19,437.30 and 8,587.80 is: 12,867.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,972.60 : 19,437.30 = 8,587.80 : x
  2. Step 2: Convert to fraction form
    12,972.60/19,437.30 = 8,587.80/x
  3. Step 3: Cross multiply
    12,972.60x = 19,437.30 × 8,587.80
  4. Step 4: Simplify right side
    12,972.60x = 166,923,644.94
  5. Step 5: Solve for x
    x = 166,923,644.94/12,972.60
  6. Step 6: Final answer
    x = 12,867.40

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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.