Home / 15,205.04-20,981.39-9,236.35

Finding the Fourth Proportional to 15,205.04, 20,981.39 and 9,236.35

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Solution

The fourth proportional to 15,205.04, 20,981.39 and 9,236.35 is: 12,745.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,205.04 : 20,981.39 = 9,236.35 : x
  2. Step 2: Convert to fraction form
    15,205.04/20,981.39 = 9,236.35/x
  3. Step 3: Cross multiply
    15,205.04x = 20,981.39 × 9,236.35
  4. Step 4: Simplify right side
    15,205.04x = 193,791,461.53
  5. Step 5: Solve for x
    x = 193,791,461.53/15,205.04
  6. Step 6: Final answer
    x = 12,745.21

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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.