Home / 15,363.95-21,203.84-9,399.58

Finding the Fourth Proportional to 15,363.95, 21,203.84 and 9,399.58

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Solution

The fourth proportional to 15,363.95, 21,203.84 and 9,399.58 is: 12,972.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,363.95 : 21,203.84 = 9,399.58 : x
  2. Step 2: Convert to fraction form
    15,363.95/21,203.84 = 9,399.58/x
  3. Step 3: Cross multiply
    15,363.95x = 21,203.84 × 9,399.58
  4. Step 4: Simplify right side
    15,363.95x = 199,307,205.14
  5. Step 5: Solve for x
    x = 199,307,205.14/15,363.95
  6. Step 6: Final answer
    x = 12,972.39

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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.