Home / 12,330.58-17,038.74-8,787.64

Finding the Fourth Proportional to 12,330.58, 17,038.74 and 8,787.64

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Solution

The fourth proportional to 12,330.58, 17,038.74 and 8,787.64 is: 12,143.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,330.58 : 17,038.74 = 8,787.64 : x
  2. Step 2: Convert to fraction form
    12,330.58/17,038.74 = 8,787.64/x
  3. Step 3: Cross multiply
    12,330.58x = 17,038.74 × 8,787.64
  4. Step 4: Simplify right side
    12,330.58x = 149,730,313.17
  5. Step 5: Solve for x
    x = 149,730,313.17/12,330.58
  6. Step 6: Final answer
    x = 12,143.01

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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.