Home / 11,156.51-15,394.24-6,439.88

Finding the Fourth Proportional to 11,156.51, 15,394.24 and 6,439.88

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Solution

The fourth proportional to 11,156.51, 15,394.24 and 6,439.88 is: 8,886.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,156.51 : 15,394.24 = 6,439.88 : x
  2. Step 2: Convert to fraction form
    11,156.51/15,394.24 = 6,439.88/x
  3. Step 3: Cross multiply
    11,156.51x = 15,394.24 × 6,439.88
  4. Step 4: Simplify right side
    11,156.51x = 99,137,058.29
  5. Step 5: Solve for x
    x = 99,137,058.29/11,156.51
  6. Step 6: Final answer
    x = 8,886.03

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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.