Home / 14,787.84-20,407.60-8,499.76

Finding the Fourth Proportional to 14,787.84, 20,407.60 and 8,499.76

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Solution

The fourth proportional to 14,787.84, 20,407.60 and 8,499.76 is: 11,729.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,787.84 : 20,407.60 = 8,499.76 : x
  2. Step 2: Convert to fraction form
    14,787.84/20,407.60 = 8,499.76/x
  3. Step 3: Cross multiply
    14,787.84x = 20,407.60 × 8,499.76
  4. Step 4: Simplify right side
    14,787.84x = 173,459,702.18
  5. Step 5: Solve for x
    x = 173,459,702.18/14,787.84
  6. Step 6: Final answer
    x = 11,729.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.