Home / 13,459,205.70-20,188,808.55-7,790,501.70

Finding the Fourth Proportional to 13,459,205.70, 20,188,808.55 and 7,790,501.70

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Solution

The fourth proportional to 13,459,205.70, 20,188,808.55 and 7,790,501.70 is: 11,685,752.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,459,205.70 : 20,188,808.55 = 7,790,501.70 : x
  2. Step 2: Convert to fraction form
    13,459,205.70/20,188,808.55 = 7,790,501.70/x
  3. Step 3: Cross multiply
    13,459,205.70x = 20,188,808.55 × 7,790,501.70
  4. Step 4: Simplify right side
    13,459,205.70x = 157,280,947,329,749.53
  5. Step 5: Solve for x
    x = 157,280,947,329,749.53/13,459,205.70
  6. Step 6: Final answer
    x = 11,685,752.55

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Similar ratio
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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.