Home / 10,916.08-15,059.40-7,378

Finding the Fourth Proportional to 10,916.08, 15,059.40 and 7,378

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Solution

The fourth proportional to 10,916.08, 15,059.40 and 7,378 is: 10,178.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,916.08 : 15,059.40 = 7,378 : x
  2. Step 2: Convert to fraction form
    10,916.08/15,059.40 = 7,378/x
  3. Step 3: Cross multiply
    10,916.08x = 15,059.40 × 7,378
  4. Step 4: Simplify right side
    10,916.08x = 111,108,253.20
  5. Step 5: Solve for x
    x = 111,108,253.20/10,916.08
  6. Step 6: Final answer
    x = 10,178.40

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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.