Home / 20,209.34-30,316.44-10,345.98

Finding the Fourth Proportional to 20,209.34, 30,316.44 and 10,345.98

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Solution

The fourth proportional to 20,209.34, 30,316.44 and 10,345.98 is: 15,520.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,209.34 : 30,316.44 = 10,345.98 : x
  2. Step 2: Convert to fraction form
    20,209.34/30,316.44 = 10,345.98/x
  3. Step 3: Cross multiply
    20,209.34x = 30,316.44 × 10,345.98
  4. Step 4: Simplify right side
    20,209.34x = 313,653,281.91
  5. Step 5: Solve for x
    x = 313,653,281.91/20,209.34
  6. Step 6: Final answer
    x = 15,520.21

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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.