Home / 14,124.30-21,186.45-13,260.30

Finding the Fourth Proportional to 14,124.30, 21,186.45 and 13,260.30

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Solution

The fourth proportional to 14,124.30, 21,186.45 and 13,260.30 is: 19,890.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,124.30 : 21,186.45 = 13,260.30 : x
  2. Step 2: Convert to fraction form
    14,124.30/21,186.45 = 13,260.30/x
  3. Step 3: Cross multiply
    14,124.30x = 21,186.45 × 13,260.30
  4. Step 4: Simplify right side
    14,124.30x = 280,938,682.94
  5. Step 5: Solve for x
    x = 280,938,682.94/14,124.30
  6. Step 6: Final answer
    x = 19,890.45

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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.