Home / 18,927.86-26,120.16-10,429.79

Finding the Fourth Proportional to 18,927.86, 26,120.16 and 10,429.79

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Solution

The fourth proportional to 18,927.86, 26,120.16 and 10,429.79 is: 14,392.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,927.86 : 26,120.16 = 10,429.79 : x
  2. Step 2: Convert to fraction form
    18,927.86/26,120.16 = 10,429.79/x
  3. Step 3: Cross multiply
    18,927.86x = 26,120.16 × 10,429.79
  4. Step 4: Simplify right side
    18,927.86x = 272,427,652.97
  5. Step 5: Solve for x
    x = 272,427,652.97/18,927.86
  6. Step 6: Final answer
    x = 14,392.95

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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.