Home / 18,926.87-26,118.74-10,429.78

Finding the Fourth Proportional to 18,926.87, 26,118.74 and 10,429.78

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Solution

The fourth proportional to 18,926.87, 26,118.74 and 10,429.78 is: 14,392.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,926.87 : 26,118.74 = 10,429.78 : x
  2. Step 2: Convert to fraction form
    18,926.87/26,118.74 = 10,429.78/x
  3. Step 3: Cross multiply
    18,926.87x = 26,118.74 × 10,429.78
  4. Step 4: Simplify right side
    18,926.87x = 272,412,817.35
  5. Step 5: Solve for x
    x = 272,412,817.35/18,926.87
  6. Step 6: Final answer
    x = 14,392.91

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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.