Home / 12,810.10-19,087.80-11,412.70

Finding the Fourth Proportional to 12,810.10, 19,087.80 and 11,412.70

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Solution

The fourth proportional to 12,810.10, 19,087.80 and 11,412.70 is: 17,005.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,810.10 : 19,087.80 = 11,412.70 : x
  2. Step 2: Convert to fraction form
    12,810.10/19,087.80 = 11,412.70/x
  3. Step 3: Cross multiply
    12,810.10x = 19,087.80 × 11,412.70
  4. Step 4: Simplify right side
    12,810.10x = 217,843,394.52
  5. Step 5: Solve for x
    x = 217,843,394.52/12,810.10
  6. Step 6: Final answer
    x = 17,005.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.