Home / 28,200.28-38,916.99-15,454.39

Finding the Fourth Proportional to 28,200.28, 38,916.99 and 15,454.39

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Solution

The fourth proportional to 28,200.28, 38,916.99 and 15,454.39 is: 21,327.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,200.28 : 38,916.99 = 15,454.39 : x
  2. Step 2: Convert to fraction form
    28,200.28/38,916.99 = 15,454.39/x
  3. Step 3: Cross multiply
    28,200.28x = 38,916.99 × 15,454.39
  4. Step 4: Simplify right side
    28,200.28x = 601,438,069.23
  5. Step 5: Solve for x
    x = 601,438,069.23/28,200.28
  6. Step 6: Final answer
    x = 21,327.38

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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.