Home / 12,780.93-19,199.34-9,106.77

Finding the Fourth Proportional to 12,780.93, 19,199.34 and 9,106.77

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Solution

The fourth proportional to 12,780.93, 19,199.34 and 9,106.77 is: 13,680.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,780.93 : 19,199.34 = 9,106.77 : x
  2. Step 2: Convert to fraction form
    12,780.93/19,199.34 = 9,106.77/x
  3. Step 3: Cross multiply
    12,780.93x = 19,199.34 × 9,106.77
  4. Step 4: Simplify right side
    12,780.93x = 174,843,973.53
  5. Step 5: Solve for x
    x = 174,843,973.53/12,780.93
  6. Step 6: Final answer
    x = 13,680.07

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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.