Home / 35,713.90-53,534.40-20,915.20

Finding the Fourth Proportional to 35,713.90, 53,534.40 and 20,915.20

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Solution

The fourth proportional to 35,713.90, 53,534.40 and 20,915.20 is: 31,351.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,713.90 : 53,534.40 = 20,915.20 : x
  2. Step 2: Convert to fraction form
    35,713.90/53,534.40 = 20,915.20/x
  3. Step 3: Cross multiply
    35,713.90x = 53,534.40 × 20,915.20
  4. Step 4: Simplify right side
    35,713.90x = 1,119,682,682.88
  5. Step 5: Solve for x
    x = 1,119,682,682.88/35,713.90
  6. Step 6: Final answer
    x = 31,351.45

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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.