Home / 18,917.60-26,106.08-10,419.56

Finding the Fourth Proportional to 18,917.60, 26,106.08 and 10,419.56

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Solution

The fourth proportional to 18,917.60, 26,106.08 and 10,419.56 is: 14,378.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,917.60 : 26,106.08 = 10,419.56 : x
  2. Step 2: Convert to fraction form
    18,917.60/26,106.08 = 10,419.56/x
  3. Step 3: Cross multiply
    18,917.60x = 26,106.08 × 10,419.56
  4. Step 4: Simplify right side
    18,917.60x = 272,013,866.92
  5. Step 5: Solve for x
    x = 272,013,866.92/18,917.60
  6. Step 6: Final answer
    x = 14,378.88

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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.