Home / 18,933.60-26,126.68-10,973.28

Finding the Fourth Proportional to 18,933.60, 26,126.68 and 10,973.28

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Solution

The fourth proportional to 18,933.60, 26,126.68 and 10,973.28 is: 15,142.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,933.60 : 26,126.68 = 10,973.28 : x
  2. Step 2: Convert to fraction form
    18,933.60/26,126.68 = 10,973.28/x
  3. Step 3: Cross multiply
    18,933.60x = 26,126.68 × 10,973.28
  4. Step 4: Simplify right side
    18,933.60x = 286,695,375.11
  5. Step 5: Solve for x
    x = 286,695,375.11/18,933.60
  6. Step 6: Final answer
    x = 15,142.15

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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.