Home / 20,930.47-31,399.65-13,482.52

Finding the Fourth Proportional to 20,930.47, 31,399.65 and 13,482.52

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Solution

The fourth proportional to 20,930.47, 31,399.65 and 13,482.52 is: 20,226.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,930.47 : 31,399.65 = 13,482.52 : x
  2. Step 2: Convert to fraction form
    20,930.47/31,399.65 = 13,482.52/x
  3. Step 3: Cross multiply
    20,930.47x = 31,399.65 × 13,482.52
  4. Step 4: Simplify right side
    20,930.47x = 423,346,330.62
  5. Step 5: Solve for x
    x = 423,346,330.62/20,930.47
  6. Step 6: Final answer
    x = 20,226.32

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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.