Home / 28,157.54-42,177.81-13,378.10

Finding the Fourth Proportional to 28,157.54, 42,177.81 and 13,378.10

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Solution

The fourth proportional to 28,157.54, 42,177.81 and 13,378.10 is: 20,039.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,157.54 : 42,177.81 = 13,378.10 : x
  2. Step 2: Convert to fraction form
    28,157.54/42,177.81 = 13,378.10/x
  3. Step 3: Cross multiply
    28,157.54x = 42,177.81 × 13,378.10
  4. Step 4: Simplify right side
    28,157.54x = 564,258,959.96
  5. Step 5: Solve for x
    x = 564,258,959.96/28,157.54
  6. Step 6: Final answer
    x = 20,039.36

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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.