Home / 10,368.40-15,516.15-7,087.90

Finding the Fourth Proportional to 10,368.40, 15,516.15 and 7,087.90

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Solution

The fourth proportional to 10,368.40, 15,516.15 and 7,087.90 is: 10,606.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,368.40 : 15,516.15 = 7,087.90 : x
  2. Step 2: Convert to fraction form
    10,368.40/15,516.15 = 7,087.90/x
  3. Step 3: Cross multiply
    10,368.40x = 15,516.15 × 7,087.90
  4. Step 4: Simplify right side
    10,368.40x = 109,976,919.59
  5. Step 5: Solve for x
    x = 109,976,919.59/10,368.40
  6. Step 6: Final answer
    x = 10,606.93

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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.