Home / 12,618,933.30-18,928,399.95-12,506,958.90

Finding the Fourth Proportional to 12,618,933.30, 18,928,399.95 and 12,506,958.90

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Solution

The fourth proportional to 12,618,933.30, 18,928,399.95 and 12,506,958.90 is: 18,760,438.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,618,933.30 : 18,928,399.95 = 12,506,958.90 : x
  2. Step 2: Convert to fraction form
    12,618,933.30/18,928,399.95 = 12,506,958.90/x
  3. Step 3: Cross multiply
    12,618,933.30x = 18,928,399.95 × 12,506,958.90
  4. Step 4: Simplify right side
    12,618,933.30x = 236,736,720,217,412.06
  5. Step 5: Solve for x
    x = 236,736,720,217,412.06/12,618,933.30
  6. Step 6: Final answer
    x = 18,760,438.35

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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.