Home / 12,572,756.12-18,943,148.30-11,359,742.78

Finding the Fourth Proportional to 12,572,756.12, 18,943,148.30 and 11,359,742.78

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Solution

The fourth proportional to 12,572,756.12, 18,943,148.30 and 11,359,742.78 is: 17,115,522.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,572,756.12 : 18,943,148.30 = 11,359,742.78 : x
  2. Step 2: Convert to fraction form
    12,572,756.12/18,943,148.30 = 11,359,742.78/x
  3. Step 3: Cross multiply
    12,572,756.12x = 18,943,148.30 × 11,359,742.78
  4. Step 4: Simplify right side
    12,572,756.12x = 215,189,292,131,394.28
  5. Step 5: Solve for x
    x = 215,189,292,131,394.28/12,572,756.12
  6. Step 6: Final answer
    x = 17,115,522.65

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.