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Finding the Fourth Proportional to 18,926.91, 26,119.16 and 10,970.67

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Solution

The fourth proportional to 18,926.91, 26,119.16 and 10,970.67 is: 15,139.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,926.91 : 26,119.16 = 10,970.67 : x
  2. Step 2: Convert to fraction form
    18,926.91/26,119.16 = 10,970.67/x
  3. Step 3: Cross multiply
    18,926.91x = 26,119.16 × 10,970.67
  4. Step 4: Simplify right side
    18,926.91x = 286,544,630.18
  5. Step 5: Solve for x
    x = 286,544,630.18/18,926.91
  6. Step 6: Final answer
    x = 15,139.54

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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.