Home / 12,145,811.61-16,761,219.33-6,639,209.67

Finding the Fourth Proportional to 12,145,811.61, 16,761,219.33 and 6,639,209.67

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Solution

The fourth proportional to 12,145,811.61, 16,761,219.33 and 6,639,209.67 is: 9,162,108.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,145,811.61 : 16,761,219.33 = 6,639,209.67 : x
  2. Step 2: Convert to fraction form
    12,145,811.61/16,761,219.33 = 6,639,209.67/x
  3. Step 3: Cross multiply
    12,145,811.61x = 16,761,219.33 × 6,639,209.67
  4. Step 4: Simplify right side
    12,145,811.61x = 111,281,249,456,726.92
  5. Step 5: Solve for x
    x = 111,281,249,456,726.92/12,145,811.61
  6. Step 6: Final answer
    x = 9,162,108.97

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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.