Home / 12,507.45-18,733.40-8,986.88

Finding the Fourth Proportional to 12,507.45, 18,733.40 and 8,986.88

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Solution

The fourth proportional to 12,507.45, 18,733.40 and 8,986.88 is: 13,460.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,507.45 : 18,733.40 = 8,986.88 : x
  2. Step 2: Convert to fraction form
    12,507.45/18,733.40 = 8,986.88/x
  3. Step 3: Cross multiply
    12,507.45x = 18,733.40 × 8,986.88
  4. Step 4: Simplify right side
    12,507.45x = 168,354,679.19
  5. Step 5: Solve for x
    x = 168,354,679.19/12,507.45
  6. Step 6: Final answer
    x = 13,460.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.