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Finding the Fourth Proportional to 28,697.84, 39,598.92 and 15,950.12

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Solution

The fourth proportional to 28,697.84, 39,598.92 and 15,950.12 is: 22,008.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,697.84 : 39,598.92 = 15,950.12 : x
  2. Step 2: Convert to fraction form
    28,697.84/39,598.92 = 15,950.12/x
  3. Step 3: Cross multiply
    28,697.84x = 39,598.92 × 15,950.12
  4. Step 4: Simplify right side
    28,697.84x = 631,607,525.87
  5. Step 5: Solve for x
    x = 631,607,525.87/28,697.84
  6. Step 6: Final answer
    x = 22,008.89

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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.