Home / 11,421.90-15,762.12-6,317.42

Finding the Fourth Proportional to 11,421.90, 15,762.12 and 6,317.42

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Solution

The fourth proportional to 11,421.90, 15,762.12 and 6,317.42 is: 8,717.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,421.90 : 15,762.12 = 6,317.42 : x
  2. Step 2: Convert to fraction form
    11,421.90/15,762.12 = 6,317.42/x
  3. Step 3: Cross multiply
    11,421.90x = 15,762.12 × 6,317.42
  4. Step 4: Simplify right side
    11,421.90x = 99,575,936.12
  5. Step 5: Solve for x
    x = 99,575,936.12/11,421.90
  6. Step 6: Final answer
    x = 8,717.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.