Home / 13,113.07-18,090.28-8,862.58

Finding the Fourth Proportional to 13,113.07, 18,090.28 and 8,862.58

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Solution

The fourth proportional to 13,113.07, 18,090.28 and 8,862.58 is: 12,226.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,113.07 : 18,090.28 = 8,862.58 : x
  2. Step 2: Convert to fraction form
    13,113.07/18,090.28 = 8,862.58/x
  3. Step 3: Cross multiply
    13,113.07x = 18,090.28 × 8,862.58
  4. Step 4: Simplify right side
    13,113.07x = 160,326,553.72
  5. Step 5: Solve for x
    x = 160,326,553.72/13,113.07
  6. Step 6: Final answer
    x = 12,226.47

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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.