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Finding the Fourth Proportional to 30,510.39, 45,762.84 and 10,787.97

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Solution

The fourth proportional to 30,510.39, 45,762.84 and 10,787.97 is: 16,180.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,510.39 : 45,762.84 = 10,787.97 : x
  2. Step 2: Convert to fraction form
    30,510.39/45,762.84 = 10,787.97/x
  3. Step 3: Cross multiply
    30,510.39x = 45,762.84 × 10,787.97
  4. Step 4: Simplify right side
    30,510.39x = 493,688,145.03
  5. Step 5: Solve for x
    x = 493,688,145.03/30,510.39
  6. Step 6: Final answer
    x = 16,180.98

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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.