Home / 13,642.63-20,386.28-10,243.26

Finding the Fourth Proportional to 13,642.63, 20,386.28 and 10,243.26

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Solution

The fourth proportional to 13,642.63, 20,386.28 and 10,243.26 is: 15,306.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,642.63 : 20,386.28 = 10,243.26 : x
  2. Step 2: Convert to fraction form
    13,642.63/20,386.28 = 10,243.26/x
  3. Step 3: Cross multiply
    13,642.63x = 20,386.28 × 10,243.26
  4. Step 4: Simplify right side
    13,642.63x = 208,821,992.08
  5. Step 5: Solve for x
    x = 208,821,992.08/13,642.63
  6. Step 6: Final answer
    x = 15,306.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.