Home / 28,235.82-42,360.24-9,515.40

Finding the Fourth Proportional to 28,235.82, 42,360.24 and 9,515.40

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Solution

The fourth proportional to 28,235.82, 42,360.24 and 9,515.40 is: 14,275.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,235.82 : 42,360.24 = 9,515.40 : x
  2. Step 2: Convert to fraction form
    28,235.82/42,360.24 = 9,515.40/x
  3. Step 3: Cross multiply
    28,235.82x = 42,360.24 × 9,515.40
  4. Step 4: Simplify right side
    28,235.82x = 403,074,627.70
  5. Step 5: Solve for x
    x = 403,074,627.70/28,235.82
  6. Step 6: Final answer
    x = 14,275.29

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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.