Home / 12,916.01-19,373.40-5,119.35

Finding the Fourth Proportional to 12,916.01, 19,373.40 and 5,119.35

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Solution

The fourth proportional to 12,916.01, 19,373.40 and 5,119.35 is: 7,678.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,916.01 : 19,373.40 = 5,119.35 : x
  2. Step 2: Convert to fraction form
    12,916.01/19,373.40 = 5,119.35/x
  3. Step 3: Cross multiply
    12,916.01x = 19,373.40 × 5,119.35
  4. Step 4: Simplify right side
    12,916.01x = 99,179,215.29
  5. Step 5: Solve for x
    x = 99,179,215.29/12,916.01
  6. Step 6: Final answer
    x = 7,678.78

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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.