Home / 18,750.14-28,139.06-8,889.46

Finding the Fourth Proportional to 18,750.14, 28,139.06 and 8,889.46

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Solution

The fourth proportional to 18,750.14, 28,139.06 and 8,889.46 is: 13,340.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,750.14 : 28,139.06 = 8,889.46 : x
  2. Step 2: Convert to fraction form
    18,750.14/28,139.06 = 8,889.46/x
  3. Step 3: Cross multiply
    18,750.14x = 28,139.06 × 8,889.46
  4. Step 4: Simplify right side
    18,750.14x = 250,140,933.51
  5. Step 5: Solve for x
    x = 250,140,933.51/18,750.14
  6. Step 6: Final answer
    x = 13,340.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.