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Finding the Fourth Proportional to 11,509.03, 15,881.30 and 6,472.45

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Solution

The fourth proportional to 11,509.03, 15,881.30 and 6,472.45 is: 8,931.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,509.03 : 15,881.30 = 6,472.45 : x
  2. Step 2: Convert to fraction form
    11,509.03/15,881.30 = 6,472.45/x
  3. Step 3: Cross multiply
    11,509.03x = 15,881.30 × 6,472.45
  4. Step 4: Simplify right side
    11,509.03x = 102,790,840.78
  5. Step 5: Solve for x
    x = 102,790,840.78/11,509.03
  6. Step 6: Final answer
    x = 8,931.32

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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.