Home / 13,156.36-18,155.31-7,848.43

Finding the Fourth Proportional to 13,156.36, 18,155.31 and 7,848.43

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Solution

The fourth proportional to 13,156.36, 18,155.31 and 7,848.43 is: 10,830.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,156.36 : 18,155.31 = 7,848.43 : x
  2. Step 2: Convert to fraction form
    13,156.36/18,155.31 = 7,848.43/x
  3. Step 3: Cross multiply
    13,156.36x = 18,155.31 × 7,848.43
  4. Step 4: Simplify right side
    13,156.36x = 142,490,679.66
  5. Step 5: Solve for x
    x = 142,490,679.66/13,156.36
  6. Step 6: Final answer
    x = 10,830.55

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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.