Home / 21,026.90-31,496.60-9,942.45

Finding the Fourth Proportional to 21,026.90, 31,496.60 and 9,942.45

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Solution

The fourth proportional to 21,026.90, 31,496.60 and 9,942.45 is: 14,892.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,026.90 : 31,496.60 = 9,942.45 : x
  2. Step 2: Convert to fraction form
    21,026.90/31,496.60 = 9,942.45/x
  3. Step 3: Cross multiply
    21,026.90x = 31,496.60 × 9,942.45
  4. Step 4: Simplify right side
    21,026.90x = 313,153,320.96
  5. Step 5: Solve for x
    x = 313,153,320.96/21,026.90
  6. Step 6: Final answer
    x = 14,892.99

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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.