Home / 28,587.74-42,858.71-13,587.33

Finding the Fourth Proportional to 28,587.74, 42,858.71 and 13,587.33

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Solution

The fourth proportional to 28,587.74, 42,858.71 and 13,587.33 is: 20,370.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,587.74 : 42,858.71 = 13,587.33 : x
  2. Step 2: Convert to fraction form
    28,587.74/42,858.71 = 13,587.33/x
  3. Step 3: Cross multiply
    28,587.74x = 42,858.71 × 13,587.33
  4. Step 4: Simplify right side
    28,587.74x = 582,335,368.21
  5. Step 5: Solve for x
    x = 582,335,368.21/28,587.74
  6. Step 6: Final answer
    x = 20,370.11

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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.