Home / 12,877.80-19,316.70-5,479.80

Finding the Fourth Proportional to 12,877.80, 19,316.70 and 5,479.80

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Solution

The fourth proportional to 12,877.80, 19,316.70 and 5,479.80 is: 8,219.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,877.80 : 19,316.70 = 5,479.80 : x
  2. Step 2: Convert to fraction form
    12,877.80/19,316.70 = 5,479.80/x
  3. Step 3: Cross multiply
    12,877.80x = 19,316.70 × 5,479.80
  4. Step 4: Simplify right side
    12,877.80x = 105,851,652.66
  5. Step 5: Solve for x
    x = 105,851,652.66/12,877.80
  6. Step 6: Final answer
    x = 8,219.70

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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.