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Finding the Fourth Proportional to 28,292.76, 42,444.27 and 12,497.76

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Solution

The fourth proportional to 28,292.76, 42,444.27 and 12,497.76 is: 18,748.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,292.76 : 42,444.27 = 12,497.76 : x
  2. Step 2: Convert to fraction form
    28,292.76/42,444.27 = 12,497.76/x
  3. Step 3: Cross multiply
    28,292.76x = 42,444.27 × 12,497.76
  4. Step 4: Simplify right side
    28,292.76x = 530,458,299.84
  5. Step 5: Solve for x
    x = 530,458,299.84/28,292.76
  6. Step 6: Final answer
    x = 18,748.91

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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.