Home / 28,276.56-39,022.74-15,703.68

Finding the Fourth Proportional to 28,276.56, 39,022.74 and 15,703.68

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Solution

The fourth proportional to 28,276.56, 39,022.74 and 15,703.68 is: 21,671.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,276.56 : 39,022.74 = 15,703.68 : x
  2. Step 2: Convert to fraction form
    28,276.56/39,022.74 = 15,703.68/x
  3. Step 3: Cross multiply
    28,276.56x = 39,022.74 × 15,703.68
  4. Step 4: Simplify right side
    28,276.56x = 612,800,621.68
  5. Step 5: Solve for x
    x = 612,800,621.68/28,276.56
  6. Step 6: Final answer
    x = 21,671.68

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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.