Home / 14,415.31-19,891.61-8,445.86

Finding the Fourth Proportional to 14,415.31, 19,891.61 and 8,445.86

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Solution

The fourth proportional to 14,415.31, 19,891.61 and 8,445.86 is: 11,654.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,415.31 : 19,891.61 = 8,445.86 : x
  2. Step 2: Convert to fraction form
    14,415.31/19,891.61 = 8,445.86/x
  3. Step 3: Cross multiply
    14,415.31x = 19,891.61 × 8,445.86
  4. Step 4: Simplify right side
    14,415.31x = 168,001,824.08
  5. Step 5: Solve for x
    x = 168,001,824.08/14,415.31
  6. Step 6: Final answer
    x = 11,654.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.