Home / 12,875.80-19,335.30-8,512.60

Finding the Fourth Proportional to 12,875.80, 19,335.30 and 8,512.60

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Solution

The fourth proportional to 12,875.80, 19,335.30 and 8,512.60 is: 12,783.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,875.80 : 19,335.30 = 8,512.60 : x
  2. Step 2: Convert to fraction form
    12,875.80/19,335.30 = 8,512.60/x
  3. Step 3: Cross multiply
    12,875.80x = 19,335.30 × 8,512.60
  4. Step 4: Simplify right side
    12,875.80x = 164,593,674.78
  5. Step 5: Solve for x
    x = 164,593,674.78/12,875.80
  6. Step 6: Final answer
    x = 12,783.18

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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.