Home / 20,429.37-30,590.58-13,387.23

Finding the Fourth Proportional to 20,429.37, 30,590.58 and 13,387.23

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Solution

The fourth proportional to 20,429.37, 30,590.58 and 13,387.23 is: 20,045.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,429.37 : 30,590.58 = 13,387.23 : x
  2. Step 2: Convert to fraction form
    20,429.37/30,590.58 = 13,387.23/x
  3. Step 3: Cross multiply
    20,429.37x = 30,590.58 × 13,387.23
  4. Step 4: Simplify right side
    20,429.37x = 409,523,130.29
  5. Step 5: Solve for x
    x = 409,523,130.29/20,429.37
  6. Step 6: Final answer
    x = 20,045.80

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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.