Home / 18,939.18-26,134.86-10,440.83

Finding the Fourth Proportional to 18,939.18, 26,134.86 and 10,440.83

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Solution

The fourth proportional to 18,939.18, 26,134.86 and 10,440.83 is: 14,407.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,939.18 : 26,134.86 = 10,440.83 : x
  2. Step 2: Convert to fraction form
    18,939.18/26,134.86 = 10,440.83/x
  3. Step 3: Cross multiply
    18,939.18x = 26,134.86 × 10,440.83
  4. Step 4: Simplify right side
    18,939.18x = 272,869,705.46
  5. Step 5: Solve for x
    x = 272,869,705.46/18,939.18
  6. Step 6: Final answer
    x = 14,407.69

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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.