Home / 12,510.72-18,746.64-7,884

Finding the Fourth Proportional to 12,510.72, 18,746.64 and 7,884

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Solution

The fourth proportional to 12,510.72, 18,746.64 and 7,884 is: 11,813.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,510.72 : 18,746.64 = 7,884 : x
  2. Step 2: Convert to fraction form
    12,510.72/18,746.64 = 7,884/x
  3. Step 3: Cross multiply
    12,510.72x = 18,746.64 × 7,884
  4. Step 4: Simplify right side
    12,510.72x = 147,798,509.76
  5. Step 5: Solve for x
    x = 147,798,509.76/12,510.72
  6. Step 6: Final answer
    x = 11,813.75

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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.