Home / 20,606.05-28,428.30-13,444.39

Finding the Fourth Proportional to 20,606.05, 28,428.30 and 13,444.39

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Solution

The fourth proportional to 20,606.05, 28,428.30 and 13,444.39 is: 18,548.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,606.05 : 28,428.30 = 13,444.39 : x
  2. Step 2: Convert to fraction form
    20,606.05/28,428.30 = 13,444.39/x
  3. Step 3: Cross multiply
    20,606.05x = 28,428.30 × 13,444.39
  4. Step 4: Simplify right side
    20,606.05x = 382,201,152.24
  5. Step 5: Solve for x
    x = 382,201,152.24/20,606.05
  6. Step 6: Final answer
    x = 18,548.01

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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.