Home / 18,886.17-28,309.80-10,118.73

Finding the Fourth Proportional to 18,886.17, 28,309.80 and 10,118.73

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Solution

The fourth proportional to 18,886.17, 28,309.80 and 10,118.73 is: 15,167.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,886.17 : 28,309.80 = 10,118.73 : x
  2. Step 2: Convert to fraction form
    18,886.17/28,309.80 = 10,118.73/x
  3. Step 3: Cross multiply
    18,886.17x = 28,309.80 × 10,118.73
  4. Step 4: Simplify right side
    18,886.17x = 286,459,222.55
  5. Step 5: Solve for x
    x = 286,459,222.55/18,886.17
  6. Step 6: Final answer
    x = 15,167.67

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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.