Home / 12,852.40-19,278.60-4,088.20

Finding the Fourth Proportional to 12,852.40, 19,278.60 and 4,088.20

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Solution

The fourth proportional to 12,852.40, 19,278.60 and 4,088.20 is: 6,132.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,852.40 : 19,278.60 = 4,088.20 : x
  2. Step 2: Convert to fraction form
    12,852.40/19,278.60 = 4,088.20/x
  3. Step 3: Cross multiply
    12,852.40x = 19,278.60 × 4,088.20
  4. Step 4: Simplify right side
    12,852.40x = 78,814,772.52
  5. Step 5: Solve for x
    x = 78,814,772.52/12,852.40
  6. Step 6: Final answer
    x = 6,132.30

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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.