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Finding the Fourth Proportional to 28,597.70, 42,913.41 and 11,956.45

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Solution

The fourth proportional to 28,597.70, 42,913.41 and 11,956.45 is: 17,941.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,597.70 : 42,913.41 = 11,956.45 : x
  2. Step 2: Convert to fraction form
    28,597.70/42,913.41 = 11,956.45/x
  3. Step 3: Cross multiply
    28,597.70x = 42,913.41 × 11,956.45
  4. Step 4: Simplify right side
    28,597.70x = 513,092,040.99
  5. Step 5: Solve for x
    x = 513,092,040.99/28,597.70
  6. Step 6: Final answer
    x = 17,941.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.