Home / 19,579.32-29,374.43-6,440.90

Finding the Fourth Proportional to 19,579.32, 29,374.43 and 6,440.90

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Solution

The fourth proportional to 19,579.32, 29,374.43 and 6,440.90 is: 9,663.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,579.32 : 29,374.43 = 6,440.90 : x
  2. Step 2: Convert to fraction form
    19,579.32/29,374.43 = 6,440.90/x
  3. Step 3: Cross multiply
    19,579.32x = 29,374.43 × 6,440.90
  4. Step 4: Simplify right side
    19,579.32x = 189,197,587.11
  5. Step 5: Solve for x
    x = 189,197,587.11/19,579.32
  6. Step 6: Final answer
    x = 9,663.13

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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.