Home / 20,628.93-28,465.12-12,126.00

Finding the Fourth Proportional to 20,628.93, 28,465.12 and 12,126.00

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Solution

The fourth proportional to 20,628.93, 28,465.12 and 12,126.00 is: 16,732.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,628.93 : 28,465.12 = 12,126.00 : x
  2. Step 2: Convert to fraction form
    20,628.93/28,465.12 = 12,126.00/x
  3. Step 3: Cross multiply
    20,628.93x = 28,465.12 × 12,126.00
  4. Step 4: Simplify right side
    20,628.93x = 345,168,167.02
  5. Step 5: Solve for x
    x = 345,168,167.02/20,628.93
  6. Step 6: Final answer
    x = 16,732.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.