Home / 20,892.64-31,343.58-10,368.40

Finding the Fourth Proportional to 20,892.64, 31,343.58 and 10,368.40

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Solution

The fourth proportional to 20,892.64, 31,343.58 and 10,368.40 is: 15,554.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,892.64 : 31,343.58 = 10,368.40 : x
  2. Step 2: Convert to fraction form
    20,892.64/31,343.58 = 10,368.40/x
  3. Step 3: Cross multiply
    20,892.64x = 31,343.58 × 10,368.40
  4. Step 4: Simplify right side
    20,892.64x = 324,982,774.87
  5. Step 5: Solve for x
    x = 324,982,774.87/20,892.64
  6. Step 6: Final answer
    x = 15,554.89

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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.