Home / 28,068.68-38,733.78-15,493.40

Finding the Fourth Proportional to 28,068.68, 38,733.78 and 15,493.40

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Solution

The fourth proportional to 28,068.68, 38,733.78 and 15,493.40 is: 21,380.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,068.68 : 38,733.78 = 15,493.40 : x
  2. Step 2: Convert to fraction form
    28,068.68/38,733.78 = 15,493.40/x
  3. Step 3: Cross multiply
    28,068.68x = 38,733.78 × 15,493.40
  4. Step 4: Simplify right side
    28,068.68x = 600,117,947.05
  5. Step 5: Solve for x
    x = 600,117,947.05/28,068.68
  6. Step 6: Final answer
    x = 21,380.34

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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.