Home / 10,421.51-15,636.71-6,912.74

Finding the Fourth Proportional to 10,421.51, 15,636.71 and 6,912.74

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Solution

The fourth proportional to 10,421.51, 15,636.71 and 6,912.74 is: 10,372.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,421.51 : 15,636.71 = 6,912.74 : x
  2. Step 2: Convert to fraction form
    10,421.51/15,636.71 = 6,912.74/x
  3. Step 3: Cross multiply
    10,421.51x = 15,636.71 × 6,912.74
  4. Step 4: Simplify right side
    10,421.51x = 108,092,537.90
  5. Step 5: Solve for x
    x = 108,092,537.90/10,421.51
  6. Step 6: Final answer
    x = 10,372.06

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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.