Home / 20,271.02-30,394.11-7,124.90

Finding the Fourth Proportional to 20,271.02, 30,394.11 and 7,124.90

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Solution

The fourth proportional to 20,271.02, 30,394.11 and 7,124.90 is: 10,682.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,271.02 : 30,394.11 = 7,124.90 : x
  2. Step 2: Convert to fraction form
    20,271.02/30,394.11 = 7,124.90/x
  3. Step 3: Cross multiply
    20,271.02x = 30,394.11 × 7,124.90
  4. Step 4: Simplify right side
    20,271.02x = 216,554,994.34
  5. Step 5: Solve for x
    x = 216,554,994.34/20,271.02
  6. Step 6: Final answer
    x = 10,682.98

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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.