Home / 13,290,258.42-18,340,563.96-7,178,686.92

Finding the Fourth Proportional to 13,290,258.42, 18,340,563.96 and 7,178,686.92

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Solution

The fourth proportional to 13,290,258.42, 18,340,563.96 and 7,178,686.92 is: 9,906,591.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,290,258.42 : 18,340,563.96 = 7,178,686.92 : x
  2. Step 2: Convert to fraction form
    13,290,258.42/18,340,563.96 = 7,178,686.92/x
  3. Step 3: Cross multiply
    13,290,258.42x = 18,340,563.96 × 7,178,686.92
  4. Step 4: Simplify right side
    13,290,258.42x = 131,661,166,605,075.41
  5. Step 5: Solve for x
    x = 131,661,166,605,075.41/13,290,258.42
  6. Step 6: Final answer
    x = 9,906,591.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.