Home / 11,368.08-15,688.80-7,389.72

Finding the Fourth Proportional to 11,368.08, 15,688.80 and 7,389.72

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Solution

The fourth proportional to 11,368.08, 15,688.80 and 7,389.72 is: 10,198.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,368.08 : 15,688.80 = 7,389.72 : x
  2. Step 2: Convert to fraction form
    11,368.08/15,688.80 = 7,389.72/x
  3. Step 3: Cross multiply
    11,368.08x = 15,688.80 × 7,389.72
  4. Step 4: Simplify right side
    11,368.08x = 115,935,839.14
  5. Step 5: Solve for x
    x = 115,935,839.14/11,368.08
  6. Step 6: Final answer
    x = 10,198.37

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1.5x scale

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.