Home / 14,047.40-21,079.20-5,288.60

Finding the Fourth Proportional to 14,047.40, 21,079.20 and 5,288.60

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Solution

The fourth proportional to 14,047.40, 21,079.20 and 5,288.60 is: 7,935.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,047.40 : 21,079.20 = 5,288.60 : x
  2. Step 2: Convert to fraction form
    14,047.40/21,079.20 = 5,288.60/x
  3. Step 3: Cross multiply
    14,047.40x = 21,079.20 × 5,288.60
  4. Step 4: Simplify right side
    14,047.40x = 111,479,457.12
  5. Step 5: Solve for x
    x = 111,479,457.12/14,047.40
  6. Step 6: Final answer
    x = 7,935.95

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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.