Home / 12,687.93-19,117.52-10,515.05

Finding the Fourth Proportional to 12,687.93, 19,117.52 and 10,515.05

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Solution

The fourth proportional to 12,687.93, 19,117.52 and 10,515.05 is: 15,843.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,687.93 : 19,117.52 = 10,515.05 : x
  2. Step 2: Convert to fraction form
    12,687.93/19,117.52 = 10,515.05/x
  3. Step 3: Cross multiply
    12,687.93x = 19,117.52 × 10,515.05
  4. Step 4: Simplify right side
    12,687.93x = 201,021,530.51
  5. Step 5: Solve for x
    x = 201,021,530.51/12,687.93
  6. Step 6: Final answer
    x = 15,843.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.