Home / 21,126.90-31,699.41-10,041.42

Finding the Fourth Proportional to 21,126.90, 31,699.41 and 10,041.42

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Solution

The fourth proportional to 21,126.90, 31,699.41 and 10,041.42 is: 15,066.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,126.90 : 31,699.41 = 10,041.42 : x
  2. Step 2: Convert to fraction form
    21,126.90/31,699.41 = 10,041.42/x
  3. Step 3: Cross multiply
    21,126.90x = 31,699.41 × 10,041.42
  4. Step 4: Simplify right side
    21,126.90x = 318,307,089.56
  5. Step 5: Solve for x
    x = 318,307,089.56/21,126.90
  6. Step 6: Final answer
    x = 15,066.44

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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.