Home / 20,710,765.64-28,569,005.34-12,962,355.86

Finding the Fourth Proportional to 20,710,765.64, 28,569,005.34 and 12,962,355.86

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Solution

The fourth proportional to 20,710,765.64, 28,569,005.34 and 12,962,355.86 is: 17,880,633.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,710,765.64 : 28,569,005.34 = 12,962,355.86 : x
  2. Step 2: Convert to fraction form
    20,710,765.64/28,569,005.34 = 12,962,355.86/x
  3. Step 3: Cross multiply
    20,710,765.64x = 28,569,005.34 × 12,962,355.86
  4. Step 4: Simplify right side
    20,710,765.64x = 370,321,613,783,320.25
  5. Step 5: Solve for x
    x = 370,321,613,783,320.25/20,710,765.64
  6. Step 6: Final answer
    x = 17,880,633.69

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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.