Home / 28,203.21-38,921.99-15,627.69

Finding the Fourth Proportional to 28,203.21, 38,921.99 and 15,627.69

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Solution

The fourth proportional to 28,203.21, 38,921.99 and 15,627.69 is: 21,567.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,203.21 : 38,921.99 = 15,627.69 : x
  2. Step 2: Convert to fraction form
    28,203.21/38,921.99 = 15,627.69/x
  3. Step 3: Cross multiply
    28,203.21x = 38,921.99 × 15,627.69
  4. Step 4: Simplify right side
    28,203.21x = 608,260,715.76
  5. Step 5: Solve for x
    x = 608,260,715.76/28,203.21
  6. Step 6: Final answer
    x = 21,567.07

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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.