Home / 13,665.64-20,488.74-6,541.72

Finding the Fourth Proportional to 13,665.64, 20,488.74 and 6,541.72

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Solution

The fourth proportional to 13,665.64, 20,488.74 and 6,541.72 is: 9,807.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,665.64 : 20,488.74 = 6,541.72 : x
  2. Step 2: Convert to fraction form
    13,665.64/20,488.74 = 6,541.72/x
  3. Step 3: Cross multiply
    13,665.64x = 20,488.74 × 6,541.72
  4. Step 4: Simplify right side
    13,665.64x = 134,031,600.23
  5. Step 5: Solve for x
    x = 134,031,600.23/13,665.64
  6. Step 6: Final answer
    x = 9,807.93

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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.