Home / 12,815.12-19,206.48-6,877.28

Finding the Fourth Proportional to 12,815.12, 19,206.48 and 6,877.28

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Solution

The fourth proportional to 12,815.12, 19,206.48 and 6,877.28 is: 10,307.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,815.12 : 19,206.48 = 6,877.28 : x
  2. Step 2: Convert to fraction form
    12,815.12/19,206.48 = 6,877.28/x
  3. Step 3: Cross multiply
    12,815.12x = 19,206.48 × 6,877.28
  4. Step 4: Simplify right side
    12,815.12x = 132,088,340.77
  5. Step 5: Solve for x
    x = 132,088,340.77/12,815.12
  6. Step 6: Final answer
    x = 10,307.23

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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.