Home / 14,160.20-21,240.30-11,856.20

Finding the Fourth Proportional to 14,160.20, 21,240.30 and 11,856.20

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Solution

The fourth proportional to 14,160.20, 21,240.30 and 11,856.20 is: 17,784.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,160.20 : 21,240.30 = 11,856.20 : x
  2. Step 2: Convert to fraction form
    14,160.20/21,240.30 = 11,856.20/x
  3. Step 3: Cross multiply
    14,160.20x = 21,240.30 × 11,856.20
  4. Step 4: Simplify right side
    14,160.20x = 251,829,244.86
  5. Step 5: Solve for x
    x = 251,829,244.86/14,160.20
  6. Step 6: Final answer
    x = 17,784.30

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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.