Home / 14,288.64-21,432.76-3,900.40

Finding the Fourth Proportional to 14,288.64, 21,432.76 and 3,900.40

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Solution

The fourth proportional to 14,288.64, 21,432.76 and 3,900.40 is: 5,850.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,288.64 : 21,432.76 = 3,900.40 : x
  2. Step 2: Convert to fraction form
    14,288.64/21,432.76 = 3,900.40/x
  3. Step 3: Cross multiply
    14,288.64x = 21,432.76 × 3,900.40
  4. Step 4: Simplify right side
    14,288.64x = 83,596,337.10
  5. Step 5: Solve for x
    x = 83,596,337.10/14,288.64
  6. Step 6: Final answer
    x = 5,850.55

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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.