Home / 18,917.87-26,111.18-10,964.48

Finding the Fourth Proportional to 18,917.87, 26,111.18 and 10,964.48

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Solution

The fourth proportional to 18,917.87, 26,111.18 and 10,964.48 is: 15,133.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,917.87 : 26,111.18 = 10,964.48 : x
  2. Step 2: Convert to fraction form
    18,917.87/26,111.18 = 10,964.48/x
  3. Step 3: Cross multiply
    18,917.87x = 26,111.18 × 10,964.48
  4. Step 4: Simplify right side
    18,917.87x = 286,295,510.89
  5. Step 5: Solve for x
    x = 286,295,510.89/18,917.87
  6. Step 6: Final answer
    x = 15,133.60

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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.