Home / 28,091.36-42,158.40-10,338.80

Finding the Fourth Proportional to 28,091.36, 42,158.40 and 10,338.80

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Solution

The fourth proportional to 28,091.36, 42,158.40 and 10,338.80 is: 15,516.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,091.36 : 42,158.40 = 10,338.80 : x
  2. Step 2: Convert to fraction form
    28,091.36/42,158.40 = 10,338.80/x
  3. Step 3: Cross multiply
    28,091.36x = 42,158.40 × 10,338.80
  4. Step 4: Simplify right side
    28,091.36x = 435,867,055.13
  5. Step 5: Solve for x
    x = 435,867,055.13/28,091.36
  6. Step 6: Final answer
    x = 15,516.06

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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.