Home / 13,133.63-18,118.14-8,886.17

Finding the Fourth Proportional to 13,133.63, 18,118.14 and 8,886.17

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Solution

The fourth proportional to 13,133.63, 18,118.14 and 8,886.17 is: 12,258.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,133.63 : 18,118.14 = 8,886.17 : x
  2. Step 2: Convert to fraction form
    13,133.63/18,118.14 = 8,886.17/x
  3. Step 3: Cross multiply
    13,133.63x = 18,118.14 × 8,886.17
  4. Step 4: Simplify right side
    13,133.63x = 161,000,781.53
  5. Step 5: Solve for x
    x = 161,000,781.53/13,133.63
  6. Step 6: Final answer
    x = 12,258.67

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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.