Home / 18,693,564.60-28,040,346.90-11,513,206.20

Finding the Fourth Proportional to 18,693,564.60, 28,040,346.90 and 11,513,206.20

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Solution

The fourth proportional to 18,693,564.60, 28,040,346.90 and 11,513,206.20 is: 17,269,809.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,693,564.60 : 28,040,346.90 = 11,513,206.20 : x
  2. Step 2: Convert to fraction form
    18,693,564.60/28,040,346.90 = 11,513,206.20/x
  3. Step 3: Cross multiply
    18,693,564.60x = 28,040,346.90 × 11,513,206.20
  4. Step 4: Simplify right side
    18,693,564.60x = 322,834,295,779,230.75
  5. Step 5: Solve for x
    x = 322,834,295,779,230.75/18,693,564.60
  6. Step 6: Final answer
    x = 17,269,809.30

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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.