Home / 12,718.14-19,070.46-7,790.10

Finding the Fourth Proportional to 12,718.14, 19,070.46 and 7,790.10

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Solution

The fourth proportional to 12,718.14, 19,070.46 and 7,790.10 is: 11,681.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,718.14 : 19,070.46 = 7,790.10 : x
  2. Step 2: Convert to fraction form
    12,718.14/19,070.46 = 7,790.10/x
  3. Step 3: Cross multiply
    12,718.14x = 19,070.46 × 7,790.10
  4. Step 4: Simplify right side
    12,718.14x = 148,560,790.45
  5. Step 5: Solve for x
    x = 148,560,790.45/12,718.14
  6. Step 6: Final answer
    x = 11,681.02

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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.