Home / 20,130.87-30,169.58-9,035.49

Finding the Fourth Proportional to 20,130.87, 30,169.58 and 9,035.49

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Solution

The fourth proportional to 20,130.87, 30,169.58 and 9,035.49 is: 13,541.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,130.87 : 30,169.58 = 9,035.49 : x
  2. Step 2: Convert to fraction form
    20,130.87/30,169.58 = 9,035.49/x
  3. Step 3: Cross multiply
    20,130.87x = 30,169.58 × 9,035.49
  4. Step 4: Simplify right side
    20,130.87x = 272,596,893.22
  5. Step 5: Solve for x
    x = 272,596,893.22/20,130.87
  6. Step 6: Final answer
    x = 13,541.24

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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.