Home / 15,401.95-21,254.91-9,431.44

Finding the Fourth Proportional to 15,401.95, 21,254.91 and 9,431.44

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Solution

The fourth proportional to 15,401.95, 21,254.91 and 9,431.44 is: 13,015.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,401.95 : 21,254.91 = 9,431.44 : x
  2. Step 2: Convert to fraction form
    15,401.95/21,254.91 = 9,431.44/x
  3. Step 3: Cross multiply
    15,401.95x = 21,254.91 × 9,431.44
  4. Step 4: Simplify right side
    15,401.95x = 200,464,319.87
  5. Step 5: Solve for x
    x = 200,464,319.87/15,401.95
  6. Step 6: Final answer
    x = 13,015.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.