Home / 10,121.40-13,968.54-5,646.24

Finding the Fourth Proportional to 10,121.40, 13,968.54 and 5,646.24

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Solution

The fourth proportional to 10,121.40, 13,968.54 and 5,646.24 is: 7,792.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,121.40 : 13,968.54 = 5,646.24 : x
  2. Step 2: Convert to fraction form
    10,121.40/13,968.54 = 5,646.24/x
  3. Step 3: Cross multiply
    10,121.40x = 13,968.54 × 5,646.24
  4. Step 4: Simplify right side
    10,121.40x = 78,869,729.29
  5. Step 5: Solve for x
    x = 78,869,729.29/10,121.40
  6. Step 6: Final answer
    x = 7,792.37

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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.