Home / 20,904.57-28,885.68-15,548.63

Finding the Fourth Proportional to 20,904.57, 28,885.68 and 15,548.63

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Solution

The fourth proportional to 20,904.57, 28,885.68 and 15,548.63 is: 21,484.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,904.57 : 28,885.68 = 15,548.63 : x
  2. Step 2: Convert to fraction form
    20,904.57/28,885.68 = 15,548.63/x
  3. Step 3: Cross multiply
    20,904.57x = 28,885.68 × 15,548.63
  4. Step 4: Simplify right side
    20,904.57x = 449,132,606.19
  5. Step 5: Solve for x
    x = 449,132,606.19/20,904.57
  6. Step 6: Final answer
    x = 21,484.90

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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.