Home / 12,012,316.24-18,021,132.12-6,618,189.20

Finding the Fourth Proportional to 12,012,316.24, 18,021,132.12 and 6,618,189.20

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Solution

The fourth proportional to 12,012,316.24, 18,021,132.12 and 6,618,189.20 is: 9,928,748.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,012,316.24 : 18,021,132.12 = 6,618,189.20 : x
  2. Step 2: Convert to fraction form
    12,012,316.24/18,021,132.12 = 6,618,189.20/x
  3. Step 3: Cross multiply
    12,012,316.24x = 18,021,132.12 × 6,618,189.20
  4. Step 4: Simplify right side
    12,012,316.24x = 119,267,261,968,357.11
  5. Step 5: Solve for x
    x = 119,267,261,968,357.11/12,012,316.24
  6. Step 6: Final answer
    x = 9,928,748.09

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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.