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Finding the Fourth Proportional to 7,006.06, 10,500.21 and 6,931.91

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Solution

The fourth proportional to 7,006.06, 10,500.21 and 6,931.91 is: 10,389.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,006.06 : 10,500.21 = 6,931.91 : x
  2. Step 2: Convert to fraction form
    7,006.06/10,500.21 = 6,931.91/x
  3. Step 3: Cross multiply
    7,006.06x = 10,500.21 × 6,931.91
  4. Step 4: Simplify right side
    7,006.06x = 72,786,451.12
  5. Step 5: Solve for x
    x = 72,786,451.12/7,006.06
  6. Step 6: Final answer
    x = 10,389.07

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1.5x scale

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.