Home / 28,043.42-38,700.39-15,296.60

Finding the Fourth Proportional to 28,043.42, 38,700.39 and 15,296.60

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Solution

The fourth proportional to 28,043.42, 38,700.39 and 15,296.60 is: 21,109.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,043.42 : 38,700.39 = 15,296.60 : x
  2. Step 2: Convert to fraction form
    28,043.42/38,700.39 = 15,296.60/x
  3. Step 3: Cross multiply
    28,043.42x = 38,700.39 × 15,296.60
  4. Step 4: Simplify right side
    28,043.42x = 591,984,491.71
  5. Step 5: Solve for x
    x = 591,984,491.71/28,043.42
  6. Step 6: Final answer
    x = 21,109.56

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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.