Home / 19,787.24-29,660.35-12,374.67

Finding the Fourth Proportional to 19,787.24, 29,660.35 and 12,374.67

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Solution

The fourth proportional to 19,787.24, 29,660.35 and 12,374.67 is: 18,549.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,787.24 : 29,660.35 = 12,374.67 : x
  2. Step 2: Convert to fraction form
    19,787.24/29,660.35 = 12,374.67/x
  3. Step 3: Cross multiply
    19,787.24x = 29,660.35 × 12,374.67
  4. Step 4: Simplify right side
    19,787.24x = 367,037,181.63
  5. Step 5: Solve for x
    x = 367,037,181.63/19,787.24
  6. Step 6: Final answer
    x = 18,549.19

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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.