Home / 12,834.40-19,230.90-7,271.20

Finding the Fourth Proportional to 12,834.40, 19,230.90 and 7,271.20

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Solution

The fourth proportional to 12,834.40, 19,230.90 and 7,271.20 is: 10,895.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,834.40 : 19,230.90 = 7,271.20 : x
  2. Step 2: Convert to fraction form
    12,834.40/19,230.90 = 7,271.20/x
  3. Step 3: Cross multiply
    12,834.40x = 19,230.90 × 7,271.20
  4. Step 4: Simplify right side
    12,834.40x = 139,831,720.08
  5. Step 5: Solve for x
    x = 139,831,720.08/12,834.40
  6. Step 6: Final answer
    x = 10,895.07

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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.