Home / 12,947,616.80-19,442,420.40-9,378,432.80

Finding the Fourth Proportional to 12,947,616.80, 19,442,420.40 and 9,378,432.80

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Solution

The fourth proportional to 12,947,616.80, 19,442,420.40 and 9,378,432.80 is: 14,082,856.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,947,616.80 : 19,442,420.40 = 9,378,432.80 : x
  2. Step 2: Convert to fraction form
    12,947,616.80/19,442,420.40 = 9,378,432.80/x
  3. Step 3: Cross multiply
    12,947,616.80x = 19,442,420.40 × 9,378,432.80
  4. Step 4: Simplify right side
    12,947,616.80x = 182,339,433,190,749.12
  5. Step 5: Solve for x
    x = 182,339,433,190,749.12/12,947,616.80
  6. Step 6: Final answer
    x = 14,082,856.79

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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.