Home / 13,461.80-18,579.88-8,159.52

Finding the Fourth Proportional to 13,461.80, 18,579.88 and 8,159.52

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Solution

The fourth proportional to 13,461.80, 18,579.88 and 8,159.52 is: 11,261.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,461.80 : 18,579.88 = 8,159.52 : x
  2. Step 2: Convert to fraction form
    13,461.80/18,579.88 = 8,159.52/x
  3. Step 3: Cross multiply
    13,461.80x = 18,579.88 × 8,159.52
  4. Step 4: Simplify right side
    13,461.80x = 151,602,902.46
  5. Step 5: Solve for x
    x = 151,602,902.46/13,461.80
  6. Step 6: Final answer
    x = 11,261.71

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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.