Home / 12,000.15-16,551.30-8,812.47

Finding the Fourth Proportional to 12,000.15, 16,551.30 and 8,812.47

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Solution

The fourth proportional to 12,000.15, 16,551.30 and 8,812.47 is: 12,154.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,000.15 : 16,551.30 = 8,812.47 : x
  2. Step 2: Convert to fraction form
    12,000.15/16,551.30 = 8,812.47/x
  3. Step 3: Cross multiply
    12,000.15x = 16,551.30 × 8,812.47
  4. Step 4: Simplify right side
    12,000.15x = 145,857,834.71
  5. Step 5: Solve for x
    x = 145,857,834.71/12,000.15
  6. Step 6: Final answer
    x = 12,154.67

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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.