Home / 12,358.18-17,049.45-7,880.74

Finding the Fourth Proportional to 12,358.18, 17,049.45 and 7,880.74

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Solution

The fourth proportional to 12,358.18, 17,049.45 and 7,880.74 is: 10,872.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,358.18 : 17,049.45 = 7,880.74 : x
  2. Step 2: Convert to fraction form
    12,358.18/17,049.45 = 7,880.74/x
  3. Step 3: Cross multiply
    12,358.18x = 17,049.45 × 7,880.74
  4. Step 4: Simplify right side
    12,358.18x = 134,362,282.59
  5. Step 5: Solve for x
    x = 134,362,282.59/12,358.18
  6. Step 6: Final answer
    x = 10,872.34

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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.