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Finding the Fourth Proportional to 15,907.88, 21,953.88 and 9,193.76

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Solution

The fourth proportional to 15,907.88, 21,953.88 and 9,193.76 is: 12,687.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,907.88 : 21,953.88 = 9,193.76 : x
  2. Step 2: Convert to fraction form
    15,907.88/21,953.88 = 9,193.76/x
  3. Step 3: Cross multiply
    15,907.88x = 21,953.88 × 9,193.76
  4. Step 4: Simplify right side
    15,907.88x = 201,838,703.79
  5. Step 5: Solve for x
    x = 201,838,703.79/15,907.88
  6. Step 6: Final answer
    x = 12,687.97

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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.