Home / 12,938.32-19,358-7,099.04

Finding the Fourth Proportional to 12,938.32, 19,358 and 7,099.04

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Solution

The fourth proportional to 12,938.32, 19,358 and 7,099.04 is: 10,621.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,938.32 : 19,358 = 7,099.04 : x
  2. Step 2: Convert to fraction form
    12,938.32/19,358 = 7,099.04/x
  3. Step 3: Cross multiply
    12,938.32x = 19,358 × 7,099.04
  4. Step 4: Simplify right side
    12,938.32x = 137,423,216.32
  5. Step 5: Solve for x
    x = 137,423,216.32/12,938.32
  6. Step 6: Final answer
    x = 10,621.41

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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.