Home / 10,121.13-15,160.36-6,421.41

Finding the Fourth Proportional to 10,121.13, 15,160.36 and 6,421.41

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Solution

The fourth proportional to 10,121.13, 15,160.36 and 6,421.41 is: 9,618.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,121.13 : 15,160.36 = 6,421.41 : x
  2. Step 2: Convert to fraction form
    10,121.13/15,160.36 = 6,421.41/x
  3. Step 3: Cross multiply
    10,121.13x = 15,160.36 × 6,421.41
  4. Step 4: Simplify right side
    10,121.13x = 97,350,887.31
  5. Step 5: Solve for x
    x = 97,350,887.31/10,121.13
  6. Step 6: Final answer
    x = 9,618.58

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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.