Home / 20,289.49-30,434.23-13,275.39

Finding the Fourth Proportional to 20,289.49, 30,434.23 and 13,275.39

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Solution

The fourth proportional to 20,289.49, 30,434.23 and 13,275.39 is: 19,913.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,289.49 : 30,434.23 = 13,275.39 : x
  2. Step 2: Convert to fraction form
    20,289.49/30,434.23 = 13,275.39/x
  3. Step 3: Cross multiply
    20,289.49x = 30,434.23 × 13,275.39
  4. Step 4: Simplify right side
    20,289.49x = 404,026,403.32
  5. Step 5: Solve for x
    x = 404,026,403.32/20,289.49
  6. Step 6: Final answer
    x = 19,913.09

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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.