Home / 12,516.15-18,783.47-10,080.36

Finding the Fourth Proportional to 12,516.15, 18,783.47 and 10,080.36

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Solution

The fourth proportional to 12,516.15, 18,783.47 and 10,080.36 is: 15,127.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,516.15 : 18,783.47 = 10,080.36 : x
  2. Step 2: Convert to fraction form
    12,516.15/18,783.47 = 10,080.36/x
  3. Step 3: Cross multiply
    12,516.15x = 18,783.47 × 10,080.36
  4. Step 4: Simplify right side
    12,516.15x = 189,344,139.65
  5. Step 5: Solve for x
    x = 189,344,139.65/12,516.15
  6. Step 6: Final answer
    x = 15,127.99

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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.