Home / 19,787.34-29,688.04-6,639.70

Finding the Fourth Proportional to 19,787.34, 29,688.04 and 6,639.70

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Solution

The fourth proportional to 19,787.34, 29,688.04 and 6,639.70 is: 9,961.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,787.34 : 29,688.04 = 6,639.70 : x
  2. Step 2: Convert to fraction form
    19,787.34/29,688.04 = 6,639.70/x
  3. Step 3: Cross multiply
    19,787.34x = 29,688.04 × 6,639.70
  4. Step 4: Simplify right side
    19,787.34x = 197,119,679.19
  5. Step 5: Solve for x
    x = 197,119,679.19/19,787.34
  6. Step 6: Final answer
    x = 9,961.91

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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.