Home / 18,934.50-26,129.70-10,981.44

Finding the Fourth Proportional to 18,934.50, 26,129.70 and 10,981.44

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Solution

The fourth proportional to 18,934.50, 26,129.70 and 10,981.44 is: 15,154.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,934.50 : 26,129.70 = 10,981.44 : x
  2. Step 2: Convert to fraction form
    18,934.50/26,129.70 = 10,981.44/x
  3. Step 3: Cross multiply
    18,934.50x = 26,129.70 × 10,981.44
  4. Step 4: Simplify right side
    18,934.50x = 286,941,732.77
  5. Step 5: Solve for x
    x = 286,941,732.77/18,934.50
  6. Step 6: Final answer
    x = 15,154.44

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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.