Home / 28,291.25-42,431.40-26,886.30

Finding the Fourth Proportional to 28,291.25, 42,431.40 and 26,886.30

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Solution

The fourth proportional to 28,291.25, 42,431.40 and 26,886.30 is: 40,324.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,291.25 : 42,431.40 = 26,886.30 : x
  2. Step 2: Convert to fraction form
    28,291.25/42,431.40 = 26,886.30/x
  3. Step 3: Cross multiply
    28,291.25x = 42,431.40 × 26,886.30
  4. Step 4: Simplify right side
    28,291.25x = 1,140,823,349.82
  5. Step 5: Solve for x
    x = 1,140,823,349.82/28,291.25
  6. Step 6: Final answer
    x = 40,324.25

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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.