Home / 21,026.81-31,534.72-9,930.53

Finding the Fourth Proportional to 21,026.81, 31,534.72 and 9,930.53

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Solution

The fourth proportional to 21,026.81, 31,534.72 and 9,930.53 is: 14,893.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,026.81 : 31,534.72 = 9,930.53 : x
  2. Step 2: Convert to fraction form
    21,026.81/31,534.72 = 9,930.53/x
  3. Step 3: Cross multiply
    21,026.81x = 31,534.72 × 9,930.53
  4. Step 4: Simplify right side
    21,026.81x = 313,156,483.00
  5. Step 5: Solve for x
    x = 313,156,483.00/21,026.81
  6. Step 6: Final answer
    x = 14,893.20

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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.