Home / 12,908.60-19,362.90-5,117.40

Finding the Fourth Proportional to 12,908.60, 19,362.90 and 5,117.40

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Solution

The fourth proportional to 12,908.60, 19,362.90 and 5,117.40 is: 7,676.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,908.60 : 19,362.90 = 5,117.40 : x
  2. Step 2: Convert to fraction form
    12,908.60/19,362.90 = 5,117.40/x
  3. Step 3: Cross multiply
    12,908.60x = 19,362.90 × 5,117.40
  4. Step 4: Simplify right side
    12,908.60x = 99,087,704.46
  5. Step 5: Solve for x
    x = 99,087,704.46/12,908.60
  6. Step 6: Final answer
    x = 7,676.10

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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.