Home / 28,171.36-42,266.32-10,642.72

Finding the Fourth Proportional to 28,171.36, 42,266.32 and 10,642.72

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Solution

The fourth proportional to 28,171.36, 42,266.32 and 10,642.72 is: 15,967.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,171.36 : 42,266.32 = 10,642.72 : x
  2. Step 2: Convert to fraction form
    28,171.36/42,266.32 = 10,642.72/x
  3. Step 3: Cross multiply
    28,171.36x = 42,266.32 × 10,642.72
  4. Step 4: Simplify right side
    28,171.36x = 449,828,609.19
  5. Step 5: Solve for x
    x = 449,828,609.19/28,171.36
  6. Step 6: Final answer
    x = 15,967.59

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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.