Home / 28,275.98-42,386.97-13,268.30

Finding the Fourth Proportional to 28,275.98, 42,386.97 and 13,268.30

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Solution

The fourth proportional to 28,275.98, 42,386.97 and 13,268.30 is: 19,889.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,275.98 : 42,386.97 = 13,268.30 : x
  2. Step 2: Convert to fraction form
    28,275.98/42,386.97 = 13,268.30/x
  3. Step 3: Cross multiply
    28,275.98x = 42,386.97 × 13,268.30
  4. Step 4: Simplify right side
    28,275.98x = 562,403,034.05
  5. Step 5: Solve for x
    x = 562,403,034.05/28,275.98
  6. Step 6: Final answer
    x = 19,889.78

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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.