Home / 11,421.99-15,762.15-6,386.22

Finding the Fourth Proportional to 11,421.99, 15,762.15 and 6,386.22

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Solution

The fourth proportional to 11,421.99, 15,762.15 and 6,386.22 is: 8,812.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,421.99 : 15,762.15 = 6,386.22 : x
  2. Step 2: Convert to fraction form
    11,421.99/15,762.15 = 6,386.22/x
  3. Step 3: Cross multiply
    11,421.99x = 15,762.15 × 6,386.22
  4. Step 4: Simplify right side
    11,421.99x = 100,660,557.57
  5. Step 5: Solve for x
    x = 100,660,557.57/11,421.99
  6. Step 6: Final answer
    x = 8,812.87

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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.