Home / 20,628.61-28,462.46-12,130.02

Finding the Fourth Proportional to 20,628.61, 28,462.46 and 12,130.02

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Solution

The fourth proportional to 20,628.61, 28,462.46 and 12,130.02 is: 16,736.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,628.61 : 28,462.46 = 12,130.02 : x
  2. Step 2: Convert to fraction form
    20,628.61/28,462.46 = 12,130.02/x
  3. Step 3: Cross multiply
    20,628.61x = 28,462.46 × 12,130.02
  4. Step 4: Simplify right side
    20,628.61x = 345,250,148.40
  5. Step 5: Solve for x
    x = 345,250,148.40/20,628.61
  6. Step 6: Final answer
    x = 16,736.47

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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.