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Finding the Fourth Proportional to 28,386.84, 42,594.84 and 12,602.69

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Solution

The fourth proportional to 28,386.84, 42,594.84 and 12,602.69 is: 18,910.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,386.84 : 42,594.84 = 12,602.69 : x
  2. Step 2: Convert to fraction form
    28,386.84/42,594.84 = 12,602.69/x
  3. Step 3: Cross multiply
    28,386.84x = 42,594.84 × 12,602.69
  4. Step 4: Simplify right side
    28,386.84x = 536,809,351.15
  5. Step 5: Solve for x
    x = 536,809,351.15/28,386.84
  6. Step 6: Final answer
    x = 18,910.50

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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.