Home / 18,739.41-28,125.51-10,428.81

Finding the Fourth Proportional to 18,739.41, 28,125.51 and 10,428.81

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Solution

The fourth proportional to 18,739.41, 28,125.51 and 10,428.81 is: 15,652.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,739.41 : 28,125.51 = 10,428.81 : x
  2. Step 2: Convert to fraction form
    18,739.41/28,125.51 = 10,428.81/x
  3. Step 3: Cross multiply
    18,739.41x = 28,125.51 × 10,428.81
  4. Step 4: Simplify right side
    18,739.41x = 293,315,599.94
  5. Step 5: Solve for x
    x = 293,315,599.94/18,739.41
  6. Step 6: Final answer
    x = 15,652.34

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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.