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Finding the Fourth Proportional to 28,482.92, 39,308.73 and 15,737.22

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Solution

The fourth proportional to 28,482.92, 39,308.73 and 15,737.22 is: 21,718.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,482.92 : 39,308.73 = 15,737.22 : x
  2. Step 2: Convert to fraction form
    28,482.92/39,308.73 = 15,737.22/x
  3. Step 3: Cross multiply
    28,482.92x = 39,308.73 × 15,737.22
  4. Step 4: Simplify right side
    28,482.92x = 618,610,072.92
  5. Step 5: Solve for x
    x = 618,610,072.92/28,482.92
  6. Step 6: Final answer
    x = 21,718.63

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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.