Home / 20,386.49-30,590.17-9,291.74

Finding the Fourth Proportional to 20,386.49, 30,590.17 and 9,291.74

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Solution

The fourth proportional to 20,386.49, 30,590.17 and 9,291.74 is: 13,942.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,386.49 : 30,590.17 = 9,291.74 : x
  2. Step 2: Convert to fraction form
    20,386.49/30,590.17 = 9,291.74/x
  3. Step 3: Cross multiply
    20,386.49x = 30,590.17 × 9,291.74
  4. Step 4: Simplify right side
    20,386.49x = 284,235,730.02
  5. Step 5: Solve for x
    x = 284,235,730.02/20,386.49
  6. Step 6: Final answer
    x = 13,942.36

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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.