Home / 14,990.05-20,685.37-8,275.51

Finding the Fourth Proportional to 14,990.05, 20,685.37 and 8,275.51

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Solution

The fourth proportional to 14,990.05, 20,685.37 and 8,275.51 is: 11,419.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,990.05 : 20,685.37 = 8,275.51 : x
  2. Step 2: Convert to fraction form
    14,990.05/20,685.37 = 8,275.51/x
  3. Step 3: Cross multiply
    14,990.05x = 20,685.37 × 8,275.51
  4. Step 4: Simplify right side
    14,990.05x = 171,181,986.29
  5. Step 5: Solve for x
    x = 171,181,986.29/14,990.05
  6. Step 6: Final answer
    x = 11,419.71

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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.