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Finding the Fourth Proportional to 18,787.77, 28,182.51 and 10,461.51

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Solution

The fourth proportional to 18,787.77, 28,182.51 and 10,461.51 is: 15,692.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,787.77 : 28,182.51 = 10,461.51 : x
  2. Step 2: Convert to fraction form
    18,787.77/28,182.51 = 10,461.51/x
  3. Step 3: Cross multiply
    18,787.77x = 28,182.51 × 10,461.51
  4. Step 4: Simplify right side
    18,787.77x = 294,831,610.19
  5. Step 5: Solve for x
    x = 294,831,610.19/18,787.77
  6. Step 6: Final answer
    x = 15,692.74

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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.