Home / 12,886.31-17,783.01-11,828.35

Finding the Fourth Proportional to 12,886.31, 17,783.01 and 11,828.35

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Solution

The fourth proportional to 12,886.31, 17,783.01 and 11,828.35 is: 16,323.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,886.31 : 17,783.01 = 11,828.35 : x
  2. Step 2: Convert to fraction form
    12,886.31/17,783.01 = 11,828.35/x
  3. Step 3: Cross multiply
    12,886.31x = 17,783.01 × 11,828.35
  4. Step 4: Simplify right side
    12,886.31x = 210,343,666.33
  5. Step 5: Solve for x
    x = 210,343,666.33/12,886.31
  6. Step 6: Final answer
    x = 16,323.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.