Home / 12,888.05-19,327.95-4,120.88

Finding the Fourth Proportional to 12,888.05, 19,327.95 and 4,120.88

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Solution

The fourth proportional to 12,888.05, 19,327.95 and 4,120.88 is: 6,180.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,888.05 : 19,327.95 = 4,120.88 : x
  2. Step 2: Convert to fraction form
    12,888.05/19,327.95 = 4,120.88/x
  3. Step 3: Cross multiply
    12,888.05x = 19,327.95 × 4,120.88
  4. Step 4: Simplify right side
    12,888.05x = 79,648,065.96
  5. Step 5: Solve for x
    x = 79,648,065.96/12,888.05
  6. Step 6: Final answer
    x = 6,180.00

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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.