Home / 14,485.30-21,728.57-5,125.40

Finding the Fourth Proportional to 14,485.30, 21,728.57 and 5,125.40

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Solution

The fourth proportional to 14,485.30, 21,728.57 and 5,125.40 is: 7,688.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,485.30 : 21,728.57 = 5,125.40 : x
  2. Step 2: Convert to fraction form
    14,485.30/21,728.57 = 5,125.40/x
  3. Step 3: Cross multiply
    14,485.30x = 21,728.57 × 5,125.40
  4. Step 4: Simplify right side
    14,485.30x = 111,367,612.68
  5. Step 5: Solve for x
    x = 111,367,612.68/14,485.30
  6. Step 6: Final answer
    x = 7,688.32

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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.