Home / 19,881.08-29,826.53-9,890.57

Finding the Fourth Proportional to 19,881.08, 29,826.53 and 9,890.57

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Solution

The fourth proportional to 19,881.08, 29,826.53 and 9,890.57 is: 14,838.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,881.08 : 29,826.53 = 9,890.57 : x
  2. Step 2: Convert to fraction form
    19,881.08/29,826.53 = 9,890.57/x
  3. Step 3: Cross multiply
    19,881.08x = 29,826.53 × 9,890.57
  4. Step 4: Simplify right side
    19,881.08x = 295,001,445.03
  5. Step 5: Solve for x
    x = 295,001,445.03/19,881.08
  6. Step 6: Final answer
    x = 14,838.30

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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.